Humorous, your humorous is a bone
True, animals trees and plants are all made of cells with similar characteristics
Because we have a limited amount of oil and we will end up running out so the demand will have to go down. We cannot sustain the amount of oil we are using.
Answer: does not have a nucleus
All of the four characteristics (has membrane-bounded organelles, has a nucleus, has a cell wall made of chitin and is at least 10 micrometers in diameter) are properties of eukaryotic cells. Cells that do not have a nucleus are prokaryotic cells.
The right answer is A: Enzyme activity decreases at these temperatures
Temperature influences the activity of the enzymes responsible for assisting with chemical reactions in the Calvin cycle. When temperatures are low, enzyme activity is slow. As temperatures increase, the activity of the enzymes that assist in these chemical reactions also increases to a certain extent, which is the optimal response to temperature. It is at this point that the rate of photosynthesis of plants is the highest.
As the temperature continues to rise beyond this point, the enzyme activity decreases until photosynthesis stops. It is important to remember that the rate of photosynthesis in C3 plants is higher in cold conditions, whereas it is the opposite in C4 plants.