subject
Geography, 21.01.2021 06:50 bluenblonderw

Scientists believe that early plants released oxygen in a process called photosynthesis. Where did the carbon dioxide needed for photosynthesis come from in the early atmosphere?
A)
Volcanoes released carbon dioxide
B)
The Earth captured carbon dioxide from space with its gravity.
C)
Water molecules on the Earth were broken to release carbon dioxide.
D)
Early bacteria and plants released carbon dioxide as well as oxygen when
they performed photosynthesis

ansver
Answers: 2

Other questions on the subject: Geography

image
Geography, 22.06.2019 04:00, superfly903
Why are fossils of organism's from the phanerozoic eon much more likely to be found than fossils of organisms from any other eon? a. more organisms present during the phanerozoic eon had soft body parts. b. organisms present during the phanerozoic eon were all microscopic. c. more organisms present during the phanerozoic eon had hard body parts. d. organisms present during the phanerozoic eon are the most ancient life forms.
Answers: 1
image
Geography, 22.06.2019 11:00, S2ru
The earth's internal process which drives seafloor spreading is
Answers: 3
image
Geography, 24.06.2019 10:30, lefthandeddolan
Which of the following statements does not describe shi huangdi? a. shi huangdi was the first emperor of the qin dynasty. b. shihuangdi wrote the lunyu, the most important text in confucianism. c. shihuangdi conquered city-states to unite china. d. shihuangdi began the process of building the great wall of china.
Answers: 1
image
Geography, 24.06.2019 14:00, lexybellx3
Most of the earthquakes in japan are a result of one plate sinking over one another
Answers: 1
You know the right answer?
Scientists believe that early plants released oxygen in a process called photosynthesis. Where did t...

Questions in other subjects:

Konu
Mathematics, 06.03.2020 22:38