Animals can help plants reproduce in a variety of ways. Which behavior can end up being more harmful than helpful? A. Birds eat berries and seeds, dispersing the seeds in their droppings as they fly.

B. Iguanas and tortoises eat leaves, fruits, and flowers, relying on each as important
seasonal food sources.

C. Insects like bees and butterflies drink nectar, carrying pollen from one flower to
another.

D. Hummingbirds drink the nectar of flowers, and they will defend their territory in
order to secure their food supply.

B

Explanation:

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

it has to be understood that the sea water contains a huge amount of sodium and chlorine ions and if they enter the cell of the atlantic cod fish, the cell will shrivel and the fish will die. to avoid such a condition, the fish uses active transport for the purpose of removing the ions against the gradient.

explanation:

the atlantic cod is not a maritime osmoconformer. its native application of salts is less than that of the seawater it lives in. it is continually falling water from the gills to the ocean via osmosis.

countering that, the fish is going to be swallowing seawater. but since its internal collection of salts is lower than seawater, the fish will want to go free of excess salt, and since that's going upon a gradient, then active transport, requiring energy, must be used to pump out the salt. much marine fish use the organs to filter out the salt and these fish discharge very straight urine.