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IrinaK [193]
3 years ago
8

Which compound was abundant in Precambrian Earth’s oceans, before complex life evolved on Earth?

Biology
2 answers:
LekaFEV [45]3 years ago
5 0
Carbon dioxide is correct
Verdich [7]3 years ago
5 0

Answer:

dissolved carbon dioxide

Explanation:

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If worldwide deforestation is not regulated, what could most likely result? *
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B. CO2 levels in the atmosphere could increase and contribute to global warming problems.

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Which two structures would provide a positive identification of a plant cell under a microscope? Question 1 options: ribosomes,
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Chloroplasts. Animal cells don’t have chloroplasts only plants
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3 years ago
Match the description to the type of energy.
attashe74 [19]

Answer:

1)diaphragm vibrations- sound waves

2) Changing magnetic fields- Electrical energy

3)sound waves- Mechanical energy

Explanation:

A changing magnetic field induces an electromotive force and then an electric field which contains electrical energy

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A diaphragm is a thin surfaced cone used to produce sound. It is caused to vibrate using electromagnetic energy.

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3 years ago
Photoautotrophs are able to convert inorganic materials into glucose. In order to do this, they require:
stira [4]

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