Water has a __, so it takes a lot of energy to change from a liquid to a gas. This helps organisms maintain the amount of water they have in their bodies by preventing water from evaporating. However, sweat evaporating helps organisms maintain homeostasis _ and keep a constant __ __.

the element that provides strength to the exoskeletons of clams and oysters is phosphorus.

this is so because calcium carbonate is the main component in the shells. calcium carbonate is strengthened by phosphorus.

explanation:

the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.

i believe it would be c: tons.

the oldest known insects are believed to live around 400 millions ago as suggested by the fossil records.   some plants having woody stems also evolved during this time.

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago. the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

the major split in tetrapods first occurred 340 million years ago branching off from amphibians.

363 million years ago when the carboniferous period began the insects started roaming on land and taking flights, following which the four limbed tetrapods adapted in the terrestrial habitat.