Carbon dioxide, which traps heat in the atmosphere and helps regulate the planet’s surface temperature, is constantly being exchanged between the atmosphere on the one hand and the oceans and terrestrial plants on the other.
This question tests the knowledge of idioms
Between x and y
UsageBetween: When
two objects must be compared
Among: When
more than two objects must be compared
MeaningCarbon dioxide is constantly used in between x and y
Here x atmosphere
and y = the oceans and terrestrial plants
A. exchanged
between the atmosphere on the one hand
and the oceans and terrestrial plants on the other
B. exchanged, on the one hand, between the atmosphere and the oceans and terrestrial plants, on the other
[Ambiguous]C. exchanged
between, on the one hand, the atmosphere,
with the oceans and terrestrial plants, on the other
D. exchanged, on the one hand,
among the oceans and terrestrial plants, and the atmosphere, on the other
E. exchanged
among the oceans and terrestrial plants on the one hand and the atmosphere on the other
Between B and A.
Option B is ambiguous as it is not clear whether the comparison is in between the atmosphere and the oceans or the comparison is in between the atmosphere and terrestrial plants.