Wildebeests: A Keystone Species Use the data provided to answer the question below in CER format. Make sure to use at least two pieces of evidence to claim and provide reasoning. FIRE! Fire is actually an important component of savanna ecosystems. Fire kills young trees and seedlings, reducing the number of big adult trees that grow over time. Since trees compete with grasses for light and soil moisture, fire actually helps the grasses and keeps the savannas open. Dr. Rico Holdo, a professor at the University of Missouri, and his colleagues modeled and wrote about the interactions of fire, rain, grasses, trees, and the various animals in the Serengeti. The interactions get complicated quickly, but I’ll try to give you a run-down of how they see fire acting in this ecosystem. First, as I’ve mentioned, fire suppresses trees and encourages grasses. If you have both fire and rain, but no animals, then something interesting happens: the rain encourages the trees, but it encourages the grasses, too. As the grasses get taller, there is more fuel for fire, and the fires become more widespread and more damaging. These fiercer fires really hurt the trees – in fact, the damage from fires (because of more rain) is more important than the extra boost the trees get directly from the rain. So more rain actually means fewer trees. With me so far? We’re now going to throw animals into the mix – well, at least some of the animals. Let’s talk about the grazers. The grazers eat the grass, and this reduces the fuel available to fire. If you have a lot of grazers, like we do in the Serengeti, the grass height is reduced a lot. That means fewer fires and that rain once again helps the trees. Further, many of the grazers are migratory and move around the landscape a lot. They don’t eat the savanna grasses in a neat, tidy, organized way. Instead, they create a patchy mosaic of grass heights, and with those different grass heights come different susceptibility of patches of grass to burn. With rain and fire and grazers, we now have a landscape of grasses of different lengths, patchy fires, and some areas dense with trees and some areas with fewer trees. All that variation means more diversity – more diversity of the grasses, plants, and trees, and more diversity of the animals that rely on them. All that diversity is due, in part, to fire. A Keystone species is a plant or animal that plays an important and unique role in how the ecosystem functions without the key stone species to ecosystem would be very different. One scientist identified Keystone specie it to look as how changes to their abundance (number ) affect other organisms. Often, there are many indirect effects of changes to ecosystems. Claim The wildebeest in the Serengeti are a keystone species. What evidence supports this claim? (Make sure to provide reasoning) ​

Answer:

These cells are usually found in all plant roots and mainly involved in providing support to the plants.

Explanation:

Answer: Cutting

Explanation: Cuttings can be made from any part of the plant. Most frequently, however, either a stem or leaf is used. A stem cutting includes a piece of stem plus any attached leaves or buds. Thus, the stem cutting only needs to form new roots to be a complete, independent plant.

The statement "They produce new inherited traits by changing the order of bases in DNA" (option A) best describes how mutations lead to variation within a species.

Mutation is a process that generates changes in the DNA sequence of an organism's genome. It can be defined as a permanent alteration in the nucleotide sequence that makes up the genetic material of an organism. Mutations can occur spontaneously, as errors in DNA replication or as a result of exposure to external factors such as radiation, chemicals, or viruses.

Mutations can also occur during meiosis, which is the process of cell division that produces gametes (sperm and eggs). Mutations are the primary source of genetic variation within a species, and they can lead to the evolution of new traits and ultimately new species over long periods of time.

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Answer:

Genetic variation is increased by meiosis. Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote. Recombination or crossing over occurs during pro phase I.

Answer:

Genetic variation is increased by meiosis

Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote. Recombination or crossing over occurs during prophase I.

Explanation: Hope this helps. Mark me brainliest! :))

Answer:

Explanation:

The statement that best describes how the heart delivers oxygen to the body cells is: "The heart pumps oxygenated blood to the body cells." The heart's main function is to circulate blood throughout the body. The blood that the heart pumps to the body contains oxygen, which is used by the body cells for energy. The heart receives deoxygenated blood from the body, pumps it to the lungs to be oxygenated, and then pumps it back to the body to supply the cells with oxygen. Therefore, the heart's role is to deliver oxygenated blood, not air, to the body cells. The heart does not break down carbon dioxide into carbon and oxygen; this process occurs in the lungs during respiration.

Effective sports leadership requires a combination of various attributes, including excellent communication skills, motivation, self-confidence, strategic thinking, integrity, and the ability to inspire and influence others.

The responsibilities of sports leadership can vary depending on the specific role, but often include setting goals, creating and implementing game plans, providing guidance and direction to team members, leading by example, and managing team dynamics.

Mo Farah and Harry Kane are both successful sports leaders who possess several key attributes.

Mo Farah is an Olympic gold medalist in long-distance running, and his attributes include discipline, perseverance, resilience, and mental toughness.

Harry Kane, on the other hand, is a successful football player and captain of Tottenham Hotspurs. His attributes include strong leadership skills, good communication, and teamwork.

Both Farah and Kane demonstrate the importance of possessing a combination of key attributes, such as discipline, resilience, leadership, and communication.

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A) White and tubular, B) The genotype could be either AAbb or AaBb. C)  No, it is not possible to produce an open flower from this cross.

Genotype refers to the genetic makeup of an individual organism, which is determined by the combination of genes inherited from its parents. It consists of the complete set of genes or alleles present in an organism's DNA, which determine its physical and behavioral traits, such as eye color, height, susceptibility to diseases, and many others.

Genotype is expressed using symbols that represent the alleles present in an organism's DNA, with uppercase letters typically used to represent dominant alleles and lowercase letters used for recessive alleles. For example, the genotype of an individual with brown eyes could be represented as BB (homozygous dominant), Bb (heterozygous), or bb (homozygous recessive).

A) The genotype of the flower is aaBb. The phenotype of the flower would be white and tubular.

B) The phenotype of the flower is red and open. The genotype could be either AAbb or AaBb.

C) No, it is not possible to produce an open flower from this cross. This is because the individual with AAbb genotype would only produce gametes with the genotype "Ab", and the individual with AaBB genotype would only produce gametes with the genotype "aB". When these gametes combine, the resulting offspring would have either the genotype AaBb or AaBB, which would result in either red tubular flowers or red open flowers. Therefore, there would be no open flowers produced from this cross, regardless of color.

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A) The phenotype of a flower with genotype aaBb would be white with an open shape. This is because the recessive allele a at gene A causes the absence of red color, while the dominant allele B at gene B causes the tubular shape to be expressed.

B) The possible genotypes of a red, open flower could be AABB, AABb, or AaBB. This is because the dominant allele A at gene A is necessary for the expression of the red color, while the dominant allele B at gene B is necessary for the expression of the tubular shape.

C) No, it would not be possible to produce an open flower from the cross between AAbb and AaBB individuals. This is because both parents are homozygous for one of the genes controlling flower shape, either recessive (bb) or dominant (BB), and therefore all their offspring will inherit at least one dominant allele for flower shape. As a result, all offspring from this cross will have a tubular shape.

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Answer:

1). it weakens the immune system

2). Effects both mental and physical health

2).Can lead to death

Aquatic biomes are made of the living and the non-living entities of water bodies constituting diverse  ecosystems

The aquatic biome is the biggest of the biomes, accounting for over 75% of the Earth's surface. This biome is typically classified as either freshwater or marine.

The aquatic biome comprises water-dominated environments all across the planet, from tropical reefs to brackish mangroves to Northern lakes. The aquatic biome is the world's biggest, accounting for around 75% of the Earth's surface area.

The availability of sunshine, as well as the quantity of dissolved oxygen and nutrients in the water, define aquatic biomes.

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The dwarf plant with white flowers has the genotype ttpp, whereas the tall plant with purple blooms has the genotype TtPp.

For instance, in pea plants, one gene controls bloom colour. Alleles are several variations of the same gene. The two different alleles here are purple flowers and white flowers.

The pea plant's chromosome number 4 contains the genes that control plant height, flowering time, and pod shape. Out of these three genes, the two that determine pod morphology and plant height are linked since they are closely spaced on the chromosome.

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Answer:

Explanation:

If Earth's magnetic field were fixed in place and the polarity didn't reverse, it would have a significant effect on our observations of seafloor basalts. Seafloor basalts are formed from magma that erupts at mid-ocean ridges and solidifies to create new oceanic crust. As the magma cools, the minerals within it become magnetized in the direction of Earth's magnetic field.

If the magnetic field were fixed and did not reverse, the magnetization of the minerals in the basalts would also be fixed and would not change over time. This means that the magnetization of the minerals in the basalts would be uniformly oriented in the same direction across the seafloor. In contrast, in the present day, Earth's magnetic field reverses polarity at irregular intervals, causing the magnetization of the basalts to flip and creating a pattern of alternating magnetic stripes on the seafloor.

Without the alternating magnetic stripes, it would be much more difficult to study the history of seafloor spreading and the movement of the Earth's tectonic plates. The alternating magnetic stripes provide a record of the Earth's magnetic field over time, which can be used to track the movement of the seafloor and the spreading of the mid-ocean ridges. Without these magnetic stripes, it would be much harder to reconstruct the history of plate tectonics and to understand the processes that have shaped the Earth's surface over millions of years.

Answer:

A) Integral/transmembrane proteins

B)Glycoprotein

C)Glycolipid

D) cholesterol

E)Phospholipid Bilayer

Answer:

Three major types of insect development: a) Ametabolous development typified by the silverfish, b) Hemimetabolous development typified by the cockroach; in some hemimetabola such as termites and grasshoppers there may be more than one stage with wing pads that could be called nymphal; c) Holometabolous development 

The correct answer is option C) exploration of different niches, avoiding competition between life stages.

Each phase of development presents a different habitat and niche, which prevents competition between species, that is, intraspecific competition. In this way, the effectiveness of the animal within its environment is increased, as well as its adaptation to the environment.

The other alternatives highlight stages of development that exist, but are not related to the increase in the number of species or to the justification presented.

As long as the experiment is repeated a sufficient number of times, it does not matter how many variables are used. Yes, an experiment should test only one variable at a time. This ensures that the experimental outcome is clearly due to one identifiable factor.

Answer:

1- Cells

2- 90%

3- 10%

Explanation:

I'm pretty sure thats right?

The statement "both parents are heterozygous for coat color" means that each parent has two different alleles (forms of a gene) for the coat color trait, with one dominant and one recessive allele.

This is indicated by the use of the term "heterozygous," which refers to an individual who has two different alleles for a particular trait.

In the case of coat color, there are typically two alleles that determine the phenotype (observable trait) of an individual. These alleles can be either dominant or recessive. In a heterozygous individual, one allele is dominant and determines the phenotype, while the other allele is recessive and does not have an observable effect on the phenotype.

So, in the context of the statement provided, both parents have one dominant and one recessive allele for coat color. As a result, their offspring will inherit one allele from each parent, with a 50% chance of inheriting either the dominant or recessive allele. The combination of alleles that an individual inherits will determine their coat color phenotype.

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Cyanosis is characterized by bluish discoloration of skin and mucous membranes. Cyanosis is usually a sign of an underlying condition rather than being a disease in itself. The most common symptoms of the condition are bluish discoloration of the lips, fingers, and toes.  

Cyanosis can be evident at birth due to the presence of a heart malformation that permits blood that is not fully oxygenated to enter the arterial circulation. Cyanosis can also appear at any time later in life and often accompanies conditions in which lung function is compromised (resulting in an inability to fully oxygenate the blood) or conditions in which the heart's pumping function is compromised. The presence of abnormal forms of hemoglobin or other abnormalities of the blood cells can also sometimes cause cyanosis. The medical term for lowered oxygen level is hypoxia, the term anoxia refers to the absence of oxygen. Pseudo cyanosis is the appearance of cyanosis that is not associated with reduced oxygen delivery to the tissues. Most causes are related to the ingestion of metals (such as silver or lead) or drugs/toxins.

Answer:

1. 1,250 miles

2. 350 km

3. 5.71 min

4. 10 m/s

Explanation:

50 m/min * 25min = 1250 miles

50 km/hr * 7 hrs = 350 km

Question was confusing, but if I interpreted it correctly...

400 m ÷ 70 m/min = 5.71 min

3 m/s to 30 m/s in 3 sec would be an increase of 10 m/s

The Moon moves in this way because of its orbit, which completes one full rotation in 27 days, 7 hours, and 43 minutes. Each day, it moves the Moon 12–13 degrees east.

The ocean experiences very long-period waves known as tides in reaction to the moon's and sun's gravitational pull. The rise & fall of the sea's surface on a regular basis is what is known as a tide. Tides start in the ocean & move toward the coasts.

They result from the moon's and, to a smaller degree, the sun's gravitational pulls on the earth. High tide occurs on a shoreline when the wave's crest, or highest point, touches the shore.

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Lower than the American Civil War cattle are now sold for less than they were during the Civil War after accounting for inflation.

Production costs rise as a result of rising domestic or foreign input prices. Firms often produce less output and increase the prices of their goods and services as a result of rising production costs per unit of output.

Demand-pull inflation explains price increases as the outcome of a greater overall demand that outpaces supply in an economy.

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A phylogenetic tree that best represents tabular information is a cladogram.

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Complete question : the following data shows four amino acids found across three species. which phylogenetic tree best represents the information in the chart?

Rotate crops in the field the season before planting is the best IPM method to reduce bacteria count in the scenario given.

Integrated pest management (IPM) is a method of pest control that uses a combination of preventive, cultural, physical, biological, and chemical practices to reduce pest populations to an acceptable level. It is based on the idea that pests should be managed in a way that is less toxic to the environment and the people and animals living in it. IPM emphasizes the prevention of pests, rather than the use of chemical pesticides as the sole form of pest control. It also requires regular monitoring to assess the extent of the pest problem and to ensure that any control measures taken are effective.

Crop rotation is a type of agricultural technique where different types of crops are planted in the same area in a succession of growing seasons to optimize the soil quality and health over time. This means that different types of enriching crops can be planted in the same spot consecutively, resulting in healthier soil that is less prone to disease and nutrient depletion. Crop rotation also helps alleviate pest or weed problems, can improve water and air quality, and can promote biodiversity.

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Answer: till the field twice before planting

Explanation:

Explanation:

ozone probably, I think

Amount of edible food produced per unit of feed Input. Calculating  ratio or feed conversion efficiency is not too difficult. The feed conversion is calculated by dividing entire feed weight by net production.

Which is the final weight minus the starting weight. The weight of feed consumed divided by the weight of the animal is known as the feed conversion ratio (FCR), which is a common way to quantify the efficiency of livestock production. Efficiency is increased when the FCR is lower.

For young animals, the daily FCR is minimal, but it rises for older animals. Residual feed intake (RFI), which is size-independent, is utilised instead of FCR when selecting animals to improve genetics because it does not produce larger, more expensive to feed animals. RFI employs the discrepancy between actual intake and anticipated intake as its output.

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Based on the information provided, it is most likely that the correct answer is: "The cell continually produces the enzymes needed to break down lactose."

This is because the diagram likely represents the lactose operon in bacteria, which is a group of genes that work together to enable the bacteria to use lactose as an energy source.

When lactose is present, it binds to the repressor protein, causing it to release from the operator region on the DNA. This allows RNA polymerase to bind to the promoter region and initiate transcription of the genes needed to break down lactose.

Once these genes are transcribed and translated into enzymes, the cell can continually produce them as long as lactose is present, allowing it to efficiently use the available resources for energy production.

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The a concise and accurate answer would be: Chicken has the highest food conversion ratio.

When answering questions on Brainly, it is important to always be factually accurate, professional, and friendly. You should also be concise and avoid providing extraneous amounts of detail.

Additionally, you should not ignore any typos or irrelevant parts of the question. Your answer should address the specific question being asked.

In this case, the question is "Which one of the following has the highest food conversion ratio?" and the answer is "chicken."

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The correct answer is option C) leishmaniasis.

Leishmaniasis is a disease caused by protozoa, transmitted through the bite of an insect vector. There is medication to prevent the disease only in humans.

The other alternatives are wrong because:

a) Schistosomiasis is a parasitic infectious disease, but its prevention and control must be carried out with basic sanitation actions.

b) Leptospirosis is a serious bacterial disease and its prevention is mainly related to basic sanitation and hygiene.

d) Leprosy is a chronic disease caused by bacteria and its prevention is based on specific treatment and hygiene.

e) AIDS is a disease caused by the HIV virus and the fight against its spread is done through health campaigns.

When first placed in the dirt, the worms may burrow into the soil or crawl around on the surface.

Exploration.

Less crawling around.

Motionless on the soil.

Tunnel creation.

Visible casting.

After 2 minutes, the worms may still be exploring their new environment or starting to burrow deeper into the soil. After 5 minutes, the worms may have burrowed deeper into the soil or be crawling around the surface less frequently. After 10 minutes, the worms are likely to have burrowed deeper into the soil or remain motionless on the surface.

When returning after one day, you may notice that the worms have created tunnels in the soil and have consumed some of the organic matter in the soil. They may also have deposited their castings, which are rich in nutrients. When returning after two days, you may notice that the worms have continued to create tunnels and consume organic matter, and their castings may be more visible.

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It looks like an entry for a herbarium. A herbarium is a collection of preserved plant specimens that are stored and arranged systematically for scientific study.

Herbarium specimens can include leaves, flowers, stems, and other plant parts, and are usually pressed and dried on special paper or sheets, called herbarium sheets, which contain information about the plant such as its scientific name, location, and date of collection.

Herbaria serve as an important resource for botanical research and education, allowing scientists to study and compare plant species from different regions and time periods. They are used to identify plant specimens, describe new species, and investigate the distribution and evolution of plants.

Herbaria can be found in many research institutions, universities, botanical gardens, and museums around the world. The largest herbarium in the world is the Museum National d'Histoire Naturelle in Paris, which houses over 8 million plant specimens.

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