Answer:
Green plants are called producers because they manufacture their own food with the aid of photosynthesis.
Bioaccumulation refers to the accumulation of a toxic chemical in the tissue of a particular organism.
Biomagnification refers to the increased concentration of a toxic chemical the higher an animal is on the food chain.
A virus can be inside a body without showing up
Answer:
so many processes requires oxygen to operate .
An example is the process of plants making their own food .
