How can an increase in biodiversity lead to an increase in ecosystem stability?
a.) a more biodiverse ecosystem is not subject to change.
b.) a more biodiverse ecosystem has a higher chance of adapting to species changes.
c.) a more biodiverse ecosystem has fewer species types to balance.
d.) a more biodiverse ecosystem is subject to fewer natural disasters

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.

Eutrophication caused by human nutrient pollution.

Hairs that clean dirt out of the air in your nasal passages are called: a. sinus b. trachea c. cilia d. mucus