Question

How often does oxygen cycle through the atmosphere? A. about every 1000 years B. about every 1500 years C. about every 2000 years D. about every 2500 years

Answer 1

C. about every 2000 years

Answer 2

@jasmine_bead3657

Answer 3

________ is the biogeochemical cycle that describes the movement of oxygen within and between it's three main reservoirs.
A. Oxygen Cycle
B. Carbon Cycle
C. Nitrogen Cycle
D. Water Cycle

Answer 4

The Oxygen Cycle

Answer 5

@jasmine_bead3657

Answer 6

What are the three main reservoirs of the oxygen cycle?
A. the atmosphere, the water cycle and rocks
B. the biosphere, the water cycle and rocks
C. the atmosphere, the biosphere and the water cycle
D. the atmosphere, the biosphere and rocks

Answer 7

C. atmosphere biosphere and water cycle.

Answer 8

What do organisms from the ocean use the carbon dioxide for?
A. to breathe
B. to build bones
C. to make shells
D. to help organisms decompose

Answer 9

carbon dioxide is needed to preform photosynthesis

Answer 10

its D i think

Answer 11

@jasmine_bead3657

Answer 12

________ is a limiting factor in many ecosystems.
A. Air
B. Sunlight
C. Shelter
D. Water

Answer 13

C. Shelter

Answer 14

@jasmine_bead3657

Answer 15

How much oxygen is contained in the atmosphere?
A. 20%
B. 21%
C. 22%
D. 23%

Answer 16

What's another name for the water cycle?