An antigen has invaded a mammal's body. specific immune cells engulf and ingest it. some of the digested pieces are displayed on the cells' bodies. what happens next?

a) b cells are activated and release antibodies

b) t cells are activated and produce clones

c) b cells withdraw the immune response as the antigen is killed

Producing disposable grocery bags consumes resources. recycling disposable bags is a solution that can recover some of the resources used to make new bags. which of the following behaviors could further refine the solution? a. disposing of bags by burning them b. reusing bags whenever possible c. using bags at once so that they do not break d. using only nonrenewable materials to make new bags subject is environmental science for apex users

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes

The importance of the mind as a part of the body is an example of: