Answer:
Probably because they just need air to being able to live and have air going in and out like carbon dioxide and getting rid of used air.
The Chesapeake bay is an estuary in United States. The presence of nitrogen and phosphorus in the estuary can cause harm to the aquatic species present there.
The main source of nitrogen in the Chesapeake bay is the agricultural runoff. The pesticides and the herbicides used in the agriculture may come along the runoff and get mixed with large rivers and water bodies. The nitrogen from agricultural runoff accounts approximately 40% of the total sources of nitrogen.
Hence, the correct answer is agricultural runoff.
Answer: Their genes are Recessive
Answer:
In animals, the process of respiration is aerobic respiration, exchange of gases takes place ( carbon dioxide leaving the cell, oxygen entering)
Single cellular organisms can exchange gases directly across their cell membrane through the process o diffusion.
Large animals cannot maintain gas exchange by diffusion across their outer surface. A respiratory surface is covered with thin, moist epithelial cells that allow oxygen and carbon dioxide to exchange. Those gases can only cross cell membranes when they are dissolved in water or an aqueous solution, thus respiratory surfaces must be moist.
Explanation:
