What does the arboreal hypothesis suggest about the reason why primates have the unique features, such as opposable thumbs, that they have on their hand?

Arboreal hypothesis suggest that primates have the unique features, such as opposable thumbs which occurs due to the adaptation of the body to the external environment.

Explanation:

Primates are those organisms that have some unique characters which are not present in other mammals such as their brain has big in size and there is a gap between fingers which helps them to hold things more precisely and tightly. These organisms belongs to kingdom animalia, class mammalia and order primates. Example of primates are monkeys and humans etc.

This is the the physical adaptation to survive in this habitat(in the air/on the trees). the opposite thumbs allows easy grasping  of three branches for locomotion within the trees, and from tree to tress,to  easily pick up any objects, and to eat with one hands while maintaining balance on the tree with another hands.

Thus this opposable thumbs ensures precision  and power.

Explanation:

it supports cell theory.it states that all living cells are made from cells