Why do forest trees grow very tall

A tree's growth is based, in part, on competition from its neighbors. Its first priority is to gain access to the sun, and in a forest up is the only way to go. ... Most trees are capable of being taller than they actually are, they're just limited by deficiencies in light, water, or nutrients.

answerformal;

the answer is translated आशा है कि मैंने मदद की.