HELP ME! African Elephants require 40-80 gallons of fresh water a day for drinking. Increasing global temperatures are causing less rainfall in some areas of Africa. How can African Elephants adapt to survive with increasing global temperatures?

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere

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.

Someone with these questions! pls 30 pts