How does using coal to generate electricity affect the environment? a. using more coal reduces the amount of pollution from using oil. b. using coal improves the quality of nearby water. c. using coal, instead of wood from trees, improve the environment. d. using coal releases pollution into the atmosphere

Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.

How do the evolutionary chart and the video support the claim that all living things are made up of cells?

Describe the relationship between isotonic solutions, equilibrium, and water movement into and out of a cell.