What do scientist use to determine the begining or end of a geologic time period?
mass extinctions
diversification of life
index fossils
supercontinent formation and movement
Answer:
i think it is c
Explanation:
The fossil forms that occur in the rocks, however, provide the chief means of establishing a geologic time scale, with the timing of the emergence and disappearance of widespread species from the fossil record being used to delineate the beginnings and endings of ages, epochs, periods, and other intervals. i am not trying to copy the other guy or girl
How do organisms depend on and compete for biotic and abiotic factors?
Your answer should include at least 6 sentences to explain the claim, evidence and reasoning.
Answer:
Organisms depend on and compete for both biotic and abiotic factors in an ecosystem. A few abiotic factors are sunlight, water, and territory. Plants compete for sunlight and water, and they depend on those factors for their survival. Biotic factors would include plants, bacteria, and other animals. Consumers of these biotic factors compete for them because they depend on them for their survival.
Explanation:
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3. Describe each one of the following types of fractures:
simple fracture
compound fracture
incomplete fracture
impact fracture
comminuted fracture
Which organisms "invented" (were the first to use) fermentation?
a
fungi
b
plants
c
bacteria
d
animals
Answer:
bacteria
Explanation:
because they are the one that still been in use
Suppose you were interested in the effect of breastfeeding versus formula feeding on the composition of gut flora in newborns. As part of your experiment, stool samples from healthy babies in the study get plated on various agar media. You notice that greater numbers of colonies are recovered when samples are plated on blood agar compared to nutrient agar (NA). After some diligent subculturing, you isolate several bacterial species capable of slow growth on the blood but not on the NA. You correctly surmise that these organisms: ______________
a. are opportunistic blood pathogens.
b. have extensive and complex nutritional requirements not met by NA are inhibited by the ingredients in NA.
c. should be classified as beta-hemolytic.
d. grow because the blood agar suppresses the growth of faster-growing bacteria.
Answer:
vAurora
Explanation:
Which of these is an advantage of factory farming?
O A. Less efficient operation than family farms
O B. More job opportunities than family farms
O C. Smaller profit margin than family farms
O D. More expensive products than family farms
Answer:
B
Explanation:
Answer is not A because this is not a benefit
Not C because it is also not a benefit
not D because it is not a benefit
B is the only benefit listed.
Explain the importance of proteins in our body
It helps repair and build your body's tissues, allows metabolic reactions to take place and coordinates bodily functions.
Addition to providing your body with a structural framework, proteins also maintain proper pH and fluid balance.
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Using the alleles A and a, what is the genotype of individual
a) 11-6
b) 1-4
11-7
Answer:
what is that supposed to be? maybe a pic of the question?
magine a white bug and a brown bug on a brown rock. Which bug do you think a bird would most likely try to catch? Explain your choice.
white
Explanation:
the white bug is lighter so the bird will most likely to go for it
Which part of the plant releases energy from food
The Mitochondria of a plant cell releases energy from the food. It is a cell organelle and is present in the cytoplasm. They make most of the essential ATPs (Adenosine Tri Phosphate).
An example of abiotic factors influencing marine organisms is:
*
O predation
competition for food,
parasitism.
salinity.
bacterial disease.
Answer:
parasitism
Explanation:
Which situation would increase the fluidity of a
phospholipid bilayer?
A. decreasing the temperature
B. increasing the number of proteins
C. increasing the number of cholesterol molecules
D. increasing the number of unsaturated fatty acids
Answer:
C
Explanation:
Cholesterol molecules stay in between fatty acid tails preventing them from sticking together
The situation that would increase the fluidity of the phospholipid bilayer is increasing the number of cholesterol molecules. The correct option is C.
What is a phospholipid bilayer?A phospholipid bilayer is a layer around a cell. The cell membrane is composed of a bilayer of phospholipids. It contains fatty acids and alcohol.
Bilayers of phospholipids are essential parts of cell membranes. The lipid bilayer serves as a physical barrier to the entry and exit of molecules and ions from the cell. However, allowing the selective transit of specific substances into and out of cells is a crucial role of the cell membrane.
Cholesterol is present between fatty acid molecules and prevents them from sticking to each other.
Therefore, the correct option is C. increasing the number of cholesterol molecules.
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The skin is the body's largest organ. It's made up of many different types of cells.
a. True
b. False
Describe how the presence of lead in body cells could interfere with the
ability of enzymes to function. *
Answer:
Descreva como a presença de chumbo nas células do corpo pode interferir com o capacidade de funcionamento das enzimas. *
Explanation:
espero ter ajudado boa noite
can someone help me with this question plss
Answer:
unkown
Explanation:
Match the type of stress to the correct type of plate tectonic boundary.
Answer:
compression:convergent
tension:divergent
shear:transform
Osmosis is a form of _________ that involves the movement of
Answer:
Osmosis is a form of passive transport that involves the movement of water or other solvents through a semi-permeable membrane into an area of higher solute concentration.
For example:
Plant root hairs absorb water from the ground. The roots have a higher solute concentration than soil which is why water flows into the roots.
What is the age of a meteorite if potassium-40 decayed from 80 g to 10 g? The half-life of potassium-40 is 1.3 billion years.
1.3 billion years
2.6 billion years
3.9 billion years
5.2 billion years
Answer: b
Explanation: i toook the test
Answer: C.
Explanation:
what do you think whould be the function of each of these cell parts in an animal cell
Which cell parts?
Cell is the smallest unit of life.
The image shows a facility that converts the energy of moving water into
electrical energy. What is one advantage of using this technology in place of a
coal-burning power plant?
A. It produces more water pollution.
B. It causes no harm to ecosystems.
C. It does not emit greenhouse gases.
D. It is fueled by a nonrenewable resource.
Answer:
C. It does not emit greenhouse gases.
The one advantage of using this technology in a coal-burning power plant is that it does not emit greenhouse gases. Therefore, option C is correct.
How does electrical energy formed from moving water?Electrical energy can be generated from moving water through a process called hydroelectric power generation. Hydroelectric power plants use the kinetic energy of moving water to spin turbines, which in turn generate electricity.
Hydroelectric power generation is a renewable source of energy that produces no carbon emissions or air pollution. It is one of the most widely used forms of renewable energy, providing electricity to millions of people worldwide.
However, the construction of dams and reservoirs can have significant environmental impacts on the surrounding ecosystems and habitats. Hence, option C is correct.
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A person with swollen gums rinses their mouth out with salt-water. Will this decrease the swelling or increase the swelling ? What will happen?
Answer:
I believe it would decrease the swelling. Salt water is good for swelling gum's.
Explanation:
The two variables in your spreadsheet are time (years) and temperature (degrees Celsius). Which is the
independent variable, and which is the dependent variable? Which variable belongs on the x-axis, and
which belongs on the y-axis? Explain your reasoning.
Answer:So, the temperature depends on the time. So, the temperature is dependent, and the time is independent. If you're looking at a graph, the independent variable is generally on the horizontal axis
Explanation:
As a result, the temperature changes with time. Therefore, while the time is independent, the temperature is dependent. The independent variable is often on the horizontal axis when viewing a graph. So the independent variable is on the x-axis and the dependent variable is on the y-axis..
What are variables?
Any attribute that can have varying values, such as height, age, temperature, or test results, is referred to be a variable in research. To assess the causality of links, researchers frequently modify or quantify independent and dependent variables in studies.
The cause is the independent variable. Its value is unaffected by other research factors.The effect is the dependent variable. Changes in the independent variable affect its value.
Therefore, the independent variable is on the x-axis and the dependent variable is on the y-axis
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The lowest range of dissolved oxygen levels which will support a diverse population of organisms is:
The lowest range of dissolved oxygen levels which will support a diverse population of organisms is:
A. 2-3 ppm
B. 4-5 ppm
C. 6-7 ppm
D. 8-9 ppm
the process of activating photoreceptors by altering the photopigments is known as __________.
The process of activating photoreceptors by altering the photopigments is known as PHOTOTRANSDUCTION. It involves the mechanism by which light can be converted into electrical signals.
Phototransduction refers to the mechanism by which light can be converted into electrical signals.
Visual phototransduction occurs in the part of the eye known as the retina, in specific cells called photoreceptors and ganglion cells.
Photoreceptor cells include rod cells and cone cells, which are sensitive to light.
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In mitosis the daughter cells are identical to the parent cell. How do the cells produced during meiosis differ from those produced from mitosis
Answer:
The cells produced during mitosis are identical but cells produced in meiosis are different.
Explanation:
This is because in mitosis, there is no crossing over, but crossing over occur in meiosis. During crossing over, there is swapping of the genetic material.
In terms of genetic composition, how similar are offspring produced by sexual reproduction to their parents? Write in 2 to 3 sentences.
Answer:
That Is is the Word is Sex The sex is the Same only way for if u have a Baby
If red blood cells are placed in distilled water and examined under a microscope
no cells are seen.
Explain why no red blood cells would be seen
Answer:
The distilled water made the red blood cells burst.
Explanation:
Distilled water is a hypotonic solution containing ZERO salt content. It is 100% water, making the red blood cells (RBC) take in water that causes the RBC to swell, then burst.
All living things are made of one or more organs? True or false
Answer: True
Explanation:
All living things are made of cells; the cell itself is the smallest fundamental unit of structure and function in living organisms. ... Organs are collections of tissues grouped together performing a common function. Organs are present not only in animals but also in plants.
Use the graph below to explain the ideal conditions for the enzyme it represents.
Answer:
Explain the effect of temperature on the relative rate of action of an enzyme is represented in the graph below: b) What is the optimum temperature (approximate) for the action of this enzyme? 6 0 L } 10 20 30 40 50 60❤
How does temperature affect the rate of a reaction?
A. temperature decreases, the kinetic energy of the particles increases and the number of collisions between particles increases
B. As temperature increases, the kinetic energy of the particles increases and the number of collisions between particles increases
C. As temperature increases, the kinetic energy of the particles decreases and the number of collisions between particles increases
D .As temperature increases, the kinetic energy of the particles decreases and the number of collisions between particles decreases