Question

part a
it is important to observe the concentration of carbon dioxide in the atmosphere because
it is an important greenhouse gas, and its increased concentration can warm the planet
an increase can cause cooling and perhaps a new ice age
submit request answer
part b
what is currently the best way to study the interior structure of the earth?
seismic waves from earthquakes
the greenhouse effect
drilling down deep into the core to take samples
submit request answer

Explanation:

For Part A: Carbon dioxide is a primary greenhouse gas; higher concentrations trap more heat, leading to global warming. For Part B: Seismic waves change speed and direction when passing through different Earth layers, allowing mapping of the interior. Drilling is impractical for deep layers, and the greenhouse effect is unrelated to Earth's interior structure.

Answer:

Part A: It is an important Greenhouse gas, and its increased concentration can warm the planet
Part B: seismic waves from earthquakes