Blood Tests
A creatinine level of greater than 1.2 for women and greater than 1.4 for men may be an early sign that the kidneys are not working properly. As kidney disease progresses, the level of creatinine in the blood rises.
All mackerel live in the water because all fish live in water and mackerel is a fish
Your answer would be D, because these are all relating to how the actions of the scientists will affect the environment and/or organisms.
