Plants add carbon to the atmosphere during respiration, and remove carbon through photosynthesis. These are two sides of the same coin – in photosynthesis, plants take in carbon dioxide and water, along with energy from the sun, to create glucose. In respiration, plants use oxygen to break down glucose for energy, releasing a byproduct of water and carbon dioxide.
Taken together, these processes form the carbon cycle, and it’s this cycle that’s been thrown into so much danger by human-driven climate change.
I think it might have been the elephant, which is letter b
Polar molecule has diff charges positive nd negative but the non polar molecule does not it has an equal charge.
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A non-polar molecule doesn't have anything in the molecule that cause it to be attracted to water or other polar molecules making it hydrophobic, like oil in water.
A polar molecule has groups on it that give it a charge and cause it to be attracted to other polar molecules. Like alcohol in water. Alcohol is polar due to the -OH group attached to it causing it to miscible in water.
Answer:
Increased keystone species
Explanation:
An organism is a keystone species when it contributes to the definition of a given ecosystem such that the absence of the keystone species in an ecosystem, the ecosystem will change dramatically or be gradually wiped out
The effect of the keystone on its environment is unevenly large when compared to its abundance relative among other organisms within the ecosystem
The keystone is therefore, a prime source of balance of nature, diversity and well-being of the ecosystem
Therefore, the option that contributes to the diversity of the ecosystem is;
Increased keystone species.
The correct answer is - 1,180 km.
North America and Europe move away from one another, though the two plates, the North American and Eurasian are merging together on the other side. Since the rate of moving away is 2 cm per year, and the current distance is 1,184 km between North America and Europe, the distance between them 200,000 years ago was 1,180 km.
To get to the result we only need to multiply the number of years with the annual movement
2 x 200,000 = 400,000
Than divide the result with 100,000, as that is how much cm are in one km
400,000 / 100,000 = 4
And we get 4 km, in this case 4 km less, thus the distance between the two, 200,000 years ago, was 1,180 km.
