7. The Law of Superposition states A. if there is a break in the rock layer, it is called an unconformity.
B. radioactive isotopes decay.
c. age is measured in comparison with another object.
D. each sedimentary rock unit is older than the unit above it.

Bababooey

Explanation:

-3-

the other guy is correct

Fortnite:  1+1=11 1+1=2 1+1=fish 1+1=dog

witch is correct

parasites can detrimentally affect their host, but also must not allow their host to die before they can complete their life cycle. some parasites have complex life cycles with many different hosts, and have had to find ways of persisting in many different environments during the change from one host to another. ectoparasites live outside the body of the host, and can more easily  disperse, but are  more exposed to predators, parasites, parasitoids. endoparasites live inside the body of the host, and are therefore protected from the outside environment. but they can be  attacked by the host's immune system. they have therefore developed  mechanisms for dispersal such as  complex life cycles.

primary succession begins with a bare rock and ends with a forest secondary succession begins after a natural disaster where there is a temporary setback after a forest fire or local destruction, but the surrounding area can fill in