Q. 5. Which statement best explains why the carbon cycle is classified as a closed-loop system?
answer choices
A. Carbon levels are monitored and maintained by
plants in a system.
B. The flow of carbon occurs only in nonliving
components of a system.
C. Earth's atmosphere traps all carbon once it
passes through living organisms in a system.
D. A fixed amount of carbon flows between the
living and nonliving components of a system.

The shift of a vehicle's weight around its center of gravity is known as

Fan egg cell containing the (n+1) number of chromosomes combines with a sperm cell containing the (n) number of chromosomes, what is the result of this union? a) all future somatic cells of the organism will contain the (2n + 1) number of chromosomes. b) all future somatic cells of the organism will contain the (2n - 1) number of chromosomes. c) only certain somatic cells of the organism will contain the (2n + 1) number of chromosomes. d) all future somatic cells of the organism will contain the normal diploid number of chromosomes.

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity hurry!