Answer:
Question 10: True Question 11: Competition and Variation
Explanation:
Natural Selection is when the animal with the best survival rates gets the right to mate. Every species wants to survive and by letting the animals with the best traits reproduce, it ensures their survival. This, of course, happens naturally.
Competition is to show whose fit and whose not and variation increases the chance of their survival. For example, if a whole species was exactly the same if one died of a disease then all of them would, because they would have the same immune system. But if there is variation, one might be vulnerable to the disease but the other might have protection from it. Meaning it could pass those genes to offspring because it was fit.
Hope this helped :)
Answer:
endocrine system
Explanation:
it would stop circulating hormones through they system
Cells need "oxygen" for the efficient use of glucose in cellular respiration.
Answer:
Sporopollenin
Explanation:
Sporopollenin is a biological polymer that is highly cross linked and made up of oxygen, hydrogen and carbon. It is referred to a chemically inert biopolymer because of its toughness and stability in rocks that have been in existence for over 500 million years. In other words, sporopollenin is chemically stable.
It is an important component of the outer layer or coating of pollen grains and plant spores. This protects spores from UV radiation and dessication.
The answer is phosphate for sure!