Question

What is the BEST term to describe cycles that involve the release or exchange of gases between the Earth’s surface and the atmosphere?
Group of answer choices

gaseous biogeochemical cycles

respiration cycles

photosynthesis cycles

sedimentary biogeochemical cycles

Flag question: Question 2
Question 21 pts
Why is the carbon cycle a gaseous biogeochemical cycle?
Group of answer choices

Plants absorb sunlight.

Plants produce energy through photosynthesis.

Plant roots grow in soil.

Plants exchange gases through photosynthesis.

Flag question: Question 3
Question 31 pts
How do seashells like coquina show that rocks and water store carbon?
Group of answer choices

Seashells are made of minerals that contain carbonates (carbon-oxygen compounds).

Seashells release carbon into the atmosphere.

Seashells are made of carbon dioxide gas frozen into a solid.

Seashells only exist in places that don’t have carbon.

Flag question: Question 4
Question 41 pts
Which biogeochemical cycle supports ecosystem life by constantly supplying breathable air for aerobic organisms?
Group of answer choices

carbon cycle

nitrogen cycle

phosphorus cycle

oxygen cycle

Flag question: Question 5
Question 51 pts
What is the main purpose of biogeochemical cycles on Earth?
Group of answer choices

to recycle elements through the Earth’s system with the flow of energy

to help plants perform photosynthesis

to help create fossil fuels

to increase carbon dioxide levels in the atmosphere

Answer 1

1) Gaseous biogeochemical cycles — they describe element cycles that exchange gases between the surface and atmosphere.

2) Plants exchange gases through photosynthesis — the carbon cycle involves gaseous CO2 being taken up and released by organisms.

3) Seashells are made of minerals that contain carbonates (carbon-oxygen compounds) — shells are calcium carbonate, showing carbon stored in rocks/sediments.

4) Oxygen cycle — it continually supplies O2 needed by aerobic organisms.

5) To recycle elements through the Earth’s system with the flow of energy — biogeochemical cycles move and reuse elements across reservoirs.