Only about 10 percent of the energy at one level of the food web is transferred to the next higher level. Most of the energy at each level is used by organisms to grow, create heat, and move. A diagram called an energy pyramid is used to display this transfer of energy. Why do you think using a pyramid shape is a good model to show how energy moves through an ecosystem?

What is a cordon and where is it found

Researchers want to use edna to look for an invasive species in the water which of the steps would be likely do last

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.