Which of the following describes a competitive relationship between two organisms? A.
A deer tick lives on a white-tailed deer and drinks the blood of the deer.
B.
An owl and a snake in the same ecosystem both eat mice as a major food source.
C.
An oxpecker sits on the back of a zebra to pick small parasites off the zebra's back.
D.
A bluebird swoops down from the air to catch a grasshopper and eats it.

Construct at least two possible hypotheses for the student’s experiment.

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

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