10 POINTSPLEASE HELP ASAP WILL MARK BRAINLEST
Living things, including humans, play a role in many of the cycles that affect the Earth globally. Which of the following best describes how they contribute to these cycles?
A.
through death and decay only
B.
through daily activities, death and decay, and technology
C.
through daily activities, death and decay
D.
through daily activities only

c-14 is carbon-14, or radiocarbon.   it is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.

consider the reaction below.

 no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

24

c. is the answer

by love gaming

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.