2.Related to population growth, what is the difference between density-dependent and density-independent factors? List at least two different hypotheses as to why the wolf population numbers in Table 1 dropped slightly from 2003–04 and then seemed to drop significantly from 2007–11

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.

The image below shows a weather service map. which details best describe this map? check all that apply