Answer: C). biomagnification
Biomagnification is the phenomena in which toxic chemicals released from industrial and agricultural wastes flow into water bodies and contaminate them. These toxic chemicals causes diseases, genetic mutations, birth defects and death in organisms which indirectly or directly take them. These toxic chemicals enters into the food chain and affects mainly the organisms which are at higher trophic levels. They get settle at the bottom of the water body with sediments and organisms feed on these sediments. These toxic chemicals are not digested therefore they are transferred from one trophic level to higher trophic level in an undigested and unchanged form. In the highest trophic level the concentration of these toxic chemicals becomes highest and result in mortality of organisms. This shows magnifying and enlarged destruction of organisms in a food chain hence named biomagnification. It affects endangered species of predators like fishes, aquatic mammals and birds which eat fishes.
Membrane proteins float in the phospholipid bilayers and then it uses selective permeability to allow certian substances to pass through.
Explanation:
As I think your question is incomplete .So sorry I am unable to give the answer.Plse rectify the question.
Answer:
An indirect channel
Explanation:
An indirect channel can be defined as a channel that includes intermediaries that are between the producer and consumers and perform numerous channel functions.
Basically, the finished products or goods moves from the manufacturer through the distributors to wholesalers and then retailers before it gets to the consumers.
