Answer:
A, D
Explanation:
What challenges do Arctic areas face as a result of global warming? 2) What measures could help deal with the problem? 3) What do you predict will happen to Arctic ecosystems if no measures are taken to reverse the problem of global warming? Explain your reasoning. 4) Which measures do you think are most important to pursue?
Answer:
Global warming is defined as the environmental issue that leads to long term heating of the earth due to human activities such as burning of fossil fuels.
1. Arctic areas are facing huge challenges due to global warming that includes rising sea levels, rapid melting of ice, loss of fish stocks, birds and marine mammals, and changes in climate patterns.
2. Measures that help to deal with the problem are reduction in the use of hydrofluorocarbons, cutting emissions of black carbon, methane, reduce overfishing, and reduction of industrial waste.
3. If there will be no measure taken to reverse the problem of global warming in the Arctic ecosystem, it will cause flood and tsunami in the nearby continents due to the rapid melting of ice, changes in climate patterns, and lead to the extinction of many marine animals.
4. Reduction of industrial waste is the most important measure to pursue because industrial waste contributes most of the greenhouse gases and causes air pollution, land pollution, water pollution, and nuclear pollution. So reduction is industrial waste will reduce the emission of harmful gases in the environment that can reduce the impact of global warming.
How many of their boys also have dimples?
Answer:
it's genetic
Explanation:
Baby cheeks are so sweet, pudgy, and pinchable. Pair those with adorable dimples and giggles and you have a baby akin to a kewpie doll.
Dimples are often seen as a desirable characteristic because they light up a face, even through smudged, terrible-two tears. They definitely seem to provide a little more personality!
But how do you know if your baby will have dimples? It’s a question that many soon-to-be parents ask themselves. The answer lies within miniscule, curly things called genes.
PLSSS SOMEONE
Why does evolutionary theory absolutely require the earth to be very
old?
Answer:
Because it takes time for the animals to adapt to their environment, and change their DNA
Answer:
Because evolutions don't happen overnight, it takes years and years for an organism to develop an evolution. So, the earth has to be old, because if we look at the earth when it was young, then we don't really see any evolutions. However, if we look at it when it's old, we can see that there were many evolutions. I hope this helps!
Explanation:
What structure is used to transport organic molecules from the leaf to other parts of the plant
Answer:
Phloem
Explanation:
Phloem is the vascular tissue responsible for transporting organic nutrients around the plant body, carries dissolved sugars from the leaves (their site of production) or storage sites to other parts of the plant that require nutrients.
List the six nitrogen bases that would pair with the following sequence of bases in a strand of DNA : T C G A C A
Answer: thymine (T) Cyostine (C) guanine (G) adenine (A)
Explanation:
Guanine (G) is complementary to cytosine (C), and adenine (A) is complementary to thymine (T). Hence, the nitrogenous bases that would form for the DNA bases TCGACA are AGCTGT.
How does base pairing take place in DNA?
A DNA double helix is joined together by the hydrogen bonds that are formed between the nitrogenous bases in the opposite strands. Adenine (A), Guanine (G), Cytosine (C), and Thymine (T) are the nitrogenous bases present in the DNA. Both adenine and guanine are purines. They make bonds with pyrimidine.
Adenine (A) of one DNA strand makes a double bond with Thymine (T) of the opposite DNA strand. The guanine (G) of one DNA strand makes three hydrogen bonds with the cytosine (C ) of the opposite DNA strand. As there are three hydrogen bonds present in guanine and cytosine (GC), they require more energy to break the bond. Adenine and thymine (AT) have two hydrogen bonds, hence they require less energy than GC bonds.
Hence, in a DNA strand, the complementary strand of TCGACA is AGCTGT.
To learn more about base pairing in DNA, refer to the following link:
https://brainly.com/question/20949471
#SPJ2
A blank is an example of a prokaryotic cell
Answer:
Bacteria
Explanation:
Answer:
Bacteria
Explanation:
Bacteria is the most common prokaryotic cell. Hope this helps!
What would happen if the squirrel population were eliminated
What would happen if the enzyme used for cellular respiration or photosynthesis to break after a few cycle? Why?
Answer:
Please mark as brainliest!!!
Explanation:
Cells face a related problem when they break down fuels, such as glucose, to produce ATP. If the cell’s supply of ATP is low, it would do well to break down glucose as quickly as possible, replenishing the ATP it needs to “keep the lights on.” If the supply of ATP is high, on the other hand, it might not be such a good idea to oxidize glucose at top speed. ATP is an unstable molecule, and if it sits around in the cell too long, it’s likely to spontaneously hydrolyze back to ADP. This is like the case of the melted ice cream sandwich: the cell has spent glucose to make ATP, and that ATP ends up going to waste.
It’s important for a cell to carefully match the activity of its fuel breakdown (pathways to its energy needs at a given moment. Here, we'll see how cells turn cellular respiration pathways “up” or “down” in response to ATP levels and other metabolic signals.
As succession reaches equilibrium or climax the biodiversity:
A. Increases
B. Decreases
Answer:
B
Explanation:
The most important high-energy compound found in the human body is
A. DNA
B. UPS
C. ATP
D. GPA
Foods usually
when they are processed.
Ο Α
O A
become more expensive
B
lose some nutrition
С
change into smooth paste
OD
turn unusual colors
Which statement is true about oxygen and nutrient levels of rivers? TIMED TEST
Your answer:
Fast moving mountain streams which flow over rocks and waterfalls are high in oxygen due to the amount of surface area of the water that is exposed to the air.
Fast moving mountain streams are high in nutrients. Organisms have adaptations to hold on in fast moving water, resulting in a large diversity organism.
Slow moving flood plain rivers are high in oxygen due to the amount of surface area of the water that is exposed to the air.
Slow moving flood plain rivers are low in nutrients. These rivers move too slow for plant growth and other organisms to survive.
Answer:
fast moving mountain streams which flow over rocks and waterfalls are high in oxygen due to the amount of surface area of the water that is exposed to the air.
Fast moving mountain streams are high in nutrients. Organisms have adaptations to hold on in fast moving water, resulting in a large diversity organism.
Slow moving flood plain rivers are high in oxygen due to the amount of surface area of the water that is exposed to the air.
Slow moving flood plain rivers are low in nutrients. These rivers move too slow for plant growth and other organisms to survive.
HELP MEHHHH!!!!!!!!!!!!!!!!!!!??????????????????????????
Answer:
Gulls, since they are the only predators shown for the green crabs.
The producers represent the second trophic level.
True or false
If a cell's organelle worked in an actual human factory and had the role of the electric generator, which organelle would it be?
Answer: mitochondria
Explanation:
An electric generator produces energy to do work. A mitochondria produces ATP to power the cell.
What are the main factors in ecosystem diversity?
The main factors in ecosystem diversity include the physical characteristics of the environment and the diversity of species present.
What is Diversity?This involves the environment containing different types of species and is affected by certain factors.
The factors which affect ecosystem diversity include physical characteristics of the environment and the diversity of species present.
Read more about Diversity here https://brainly.com/question/26110061
#SPJ2
what happened as a result of over hunting whales
Which of the following statements about symbiotic relationships is true?
In mutualism, neither organism benefits.
At least one organism benefits from commensalism.
In parasitism, both organisms are harmed.
Both organisms benefit from commensalism.
Answer:
At least one organism benefits from commensalism.
Explanation:
The symbiotic relationship of commensalism is when one organism benefits and the other organism receives neither benefit nor harm.
So, this statement is true, because at least one organism has to benefit from the relationship, while the other will not be harmed or helped.
How are the craters the same?
Answer:
The craters on what? Is there supposed to be a picture added to this?
Explanation:
What happens to the matter and energy in fruits as they decompose.
Please help! I really need help in science and no one in my family can help me! I will ask more science questions after this just in case you can help with those too
Answer:
During the process of decomposition, the decomposers provide food for themselves by extracting chemicals from the dead bodies or organic wastes; using these to produce energy. The decomposers will then produce waste of their own. In turn, this will also decompose, eventually returning nutrients to the soil.
Explanation:
Which phrase describes organisms that formed index fossils?
(a) Are extinct
(b) Had soft parts
(c) Were generally large
(d) Lived in a narrow geographic area
Answer:
A.) Are extinct
You should mark me brainliest because I think I'm cool
What types of substances tend to be alkaline?
Answer:
Bases, like cleaning supplies
Explanation:
what are the steps for the respiratory system?
Answer:
Other components of the respiratory system conduct air to the lungs, such as the trachea (windpipe) which branches into smaller structures called bronchi. The process of breathing (respiration) is divided into two distinct phases, inspiration (inhalation) and expiration (exhalation).
Answer:
The primary organs of the respiratory system are the lungs, which function to take in oxygen and expel carbon dioxide as we breathe.The gas exchange process is performed by the lungs and respiratory system. Air, a mix of oxygen and other gases, is inhaled.In the throat, the trachea, or windpipe, filters the air. The trachea branches into two bronchi, tubes that lead to the lungs.Once in the lungs, oxygen is moved into the bloodstream. Blood carries the oxygen through the body to where it is needed.Red blood cells collect carbon dioxide from the body’s cells and transports it back to the lungs.An exchange of oxygen and carbon dioxide takes place in the alveoli, small structures within the lungs. The carbon dioxide, a waste gas, is exhaled and the cycle begins again with the next breath.The diaphragm is a dome-shaped muscle below the lungs that controls breathing. The diaphragm flattens out and pulls forward, drawing air into the lungs for inhalation. During exhalation the diaphragm expands to force air out of the lungs. Adults normally take 12 to 20 breaths per minute. Strenuous exercise drives the breath rate up to an average of 45 breaths per minute.
Which type of energy pyramid can be inverted?
A) pyramid of numbers
B) pyramid of biomass
C) pyramid of energy
D) pyramids of numbers, biomass, and energy
Answer:B
Explanation:
Answer:
The correct answer is D
Explanation:
Lawrence is a long distance runner on the school’s track and field team. Proper nutrition is very important for athletes so Lawrence wants to make the right food choices before a big track meet.
Given what you know about how food is broken down to provide energy in the body, which is the best choice for Lawrence to eat before his event?
a supplement bar that provides 500 Calories composed of complex sugars
a candy bar that provides 500 Calories composed of simple sugars
a protein shake that provides 500 calories composed of complex sugars
a fruit smoothie that provides 500 calories of simple sugars
Answer:
a supplement bar that provides 500 Calories composed of complex sugars
Explanation:
Got it right on edge
Energy is released from ATP when a phosphate group is removed.
true or false?
Yes! True!
[From nature.com] "When one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released, and ATP is converted to adenosine diphosphate (ADP). Likewise, energy is also released when a phosphate is removed from ADP to form adenosine monophosphate (AMP)."
Answer:
true bro trust me
Explanation:
Describe why Canada geese migrate to meet their basic needs.
Answer:
Canada Geese migrate because when winter gets harsh the lakes, ponds, and streams all freeze over so then the Canadian Geese can't eat, so they migrate to somewhere where there is open water. ... From their original home in the North the Canadian Geese fly all the way down to the south.
Explanation:
Answer:
Canadian geese eat grass, during the winter in Canada the snow either covers all pf the available grass, or it dies. So they travel to warmer, southern regions where their grass is still abundant.
enzyme activity can be affected by the following check all that apply
Answer:
enzyme activity is affected by many factors such as temperature, concentration and ph note that enzymes work best within a certain ph ranges
Explanation:
proved that dna Carries genetic information
Answer:
Hope it helps...
Explanation:
The Hershey–Chase experiments were a series of experiments conducted in 1952 by Alfred Hershey and Martha Chase that helped to confirm that DNA is genetic material. Hershey and Chase and subsequent discoveries all served to prove that DNA is the hereditary material.
Genetic information is carried in the linear sequence of nucleotides in DNA. Each molecule of DNA is a double helix formed from two complementary strands of nucleotides held together by hydrogen bonds between G-C and A-T base pairs. In eucaryotes, DNA is contained in the cell nucleus.
(will give brainliest if correct)
Which resource is sometimes unpredictable in terms of energy production?
coal
wood
gasoline
natural gas
Answer:
Coal and/or wood