Does anybody know how to do
define each term, explain why it has been a reason for introduction in the past, and give 2 examples of introduced organisms ( include a picture of each organism in your report or presentation). you will earn 2 points for each explanation, and 1 point for each example for a total of 16 points for this section.

1. agriculture or aquaculture
2. recreation (includes: pet trade/fishing/zoos and aquariums)
3. biological control
4. genetic conservationw to make a line graph on microsoft word?

i got the definitions i just need to know why these have been a reason for introduction in the past

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.

Hemoglobin is a proton that carries oxygen around your body what is hemoglobin made from

Ecology can best be described as the study of what