Answer:
THEY ARE ORGANIC COMPOUNDS
Explanation:
They make up proteins and they are also a combination of amines and carboxylic acids
They are not all vertebrates. There are spiders and insects in that kingdom.
They depend on other organisms for food.
They are all made up of more than one cell.
They can all move about on their own.
Answer: Photosynthesis, Decomposition, Respiration and Combustion
Explanation:
My guess is that fat-soluble toxins that may occur in freshwater ecosystems would most affect apex species in these ecosystems. This is because fat-soluble toxins are stored in the fat reserves of animals, and then bioaccumulate up the food chain. So in this case, most of the toxin is not secreted, but stored within the food chain, and bioaccumulates, with the concentration becoming higher the further up the food chain.
The gradual decline in men's testosterone levels in middle age can reduce their sex drive
