Salmon are anadromous fish. This means that they live in the ocean mostly, but breed in freshwater. A freshwater pike is unable to move into the ocean from a river.
Based on your knowledge of cellular membranes, explain what must be different
about salmon and pike.

What is the following best defines climate?

What causes darkening of the skin as melanin production increases

Vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a.) antibody, antibiotic b.) antigen, antibody c.)antibiotic, antibody d.)antibody, antigen