The understanding of evolutionary processes has helped scientists in the field of artificial selection. The best example of artificial selection is the conservation of the American bald eagle. the geographical distribution of Holstein cows. the production of pesticide-resistant potatoes. the collection of the largest pumpkin in the season.

Which is true of the regious near earth equator

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.

Which type of respiration takes place when there is no oxygen present? a. anaerobic b. mitochondrial c. cellular d. aerobica. anaerobic