Q2. Scientific evidence indicates that CO2 added to the air by the burning of wood and fossil fuels is contributing to global warming, a rise in the global temperature. Tropical rain forests are estimated to be responsible for approximately 20% of the global photosynthesis, yet the consumption of large amounts of CO2 by living trees is thought to make little or no net contribution to the reduction of global warming. Why might this be?

Good

Explanation:

Because Co2 is only affected by the amount of rain in tropical forest

the answer is d (apex) good luck : ))

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.