The physical expression of a gene is called?

Hey me with this one❤☺❤ how do you say that a cell also has a life span and death like an organism? give one example.

Control of the body is accomplished by which of the following body systems? nervous system and circulatory system endocrine and repertory system circulatory and respiratory systems nervous system and endocrine systems

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring