Receptors that are bind to chemicals outside of the cell, and this binding process causes a chemical response on the inside of cells

Natalie had random hand movements when she was two months old. when she was six months old, she used to grab a block with her whole hand. now at the age of ten months, she can grasp the same block with her thumb and forefinger. this sequence of growth in her hand and finger movements is according to the pattern.

Match the types of competition to their descriptions

What is the most appropriate method of gaining weight (muscle mass)