<span>I think I'd go with this one: Central nervous system - processes information and controls responses. It looks like correct pair.</span>
Intrasexual selection
Intrasexual Selection is when
members of the same sex within a species contend emulously with each other in
order to acquire chances to mate with others such as the male against male
competition for females. This type of selection often involves posturing and
fighting. Species or individuals suitable for intrasexual selection will possess
developed better weapons than their competitors.
I think it would be in the cells
