The endosymbiosis explains how eukaryotic cells may have evolved from prokaryotic cells.
examples of vestigial structure would include the tail bone, wisdom teeth, and the appendix. hope this helps :)
Explanation:
Storing the food helps them to use it in winter and survive because there is very little sunlight available and so they photosynthesis less. When they have extra food they store it in their seeds and when the seed grows it gets it's food from the plant until the plant is able to photosynthesis and produce its food.
The energy content of food is described in terms of calories because the energy in food ultimately becomes heat.
God bless!
Answer:
I would have to say c I have learned this type of stuff in the past
