is when the lead male and female are given preferential treatment to resources such as food and potential mates.

Dominance hierarchy

Explanation:

Dominance hierarchy may be defined as a type of a social hierarchy which arises when the members of a social group interacts and create a ranking system in the society. The members compete for access to the to limited resources as well as mating opportunities.

It is the ranking system behavior in the nature where the lead or the main male and females are provided preferential treatment to the food resources and potential mates.

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.