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drek231 [11]
2 years ago
14

How did cyanobacteria affect Earth's early atmosphere?

Biology
1 answer:
hammer [34]2 years ago
3 0

Answer:

The correct answer is option - C. They replaced carbon dioxide with oxygen in the atmosphere.

Explanation:

Cyanobacteria or Blue-green algae is a group of bacteria that is making its own food using water and carbon dioxide in the presence of sunlight, the process of photosynthesis

These organisms release oxygen as a byproduct of photosynthesis in the atmosphere. Through this process, these organisms replaced carbon dioxide with oxygen in the atmosphere in the early earth.

Thus, the correct answer is option C. They replaced carbon dioxide with oxygen in the atmosphere.

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If your shirt is partly cotton and partly polyester, what part is biodegradable?
Ivahew [28]

Answer:

cotton is biodegradable

Explanation:

it is natural and organic

3 0
1 year ago
An owl eats its prey whole or in large pieces. Summarize what is found in an owl pellet and why it is regurgitated. 
Annette [7]
Small bones and hair can be found in owl pellets, These things arent digestible thus leading to them being regurgitated whole. 

8 0
3 years ago
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How can an individual help to fight against air pollution?
Mnenie [13.5K]

They can protest to use safer sources of energy like power plants.

3 0
2 years ago
What would be the correct sequencing of DNA to match A, T, T, G, C
Marianna [84]

Answer:

A.

Explanation:

The correct sequencing of DNA nucleotides to match A, T, T, G, C is T, A, A, C, G because the nucleotide matches are: Adenine-Thymine, and Guanine-Cytosine. This works both ways, A-T or T-A, and G-C or C-G. The correct sequence therefore is A.

3 0
3 years ago
If an adult dog has 78 chromosomes the number of chromosomes in a dogs sperm cell will be
Sergio039 [100]

39

Reproductive cells are haploid (have 1/2 the chromosomes), whereas somatic/body cells are diploid (have the full set of chromosomes)

This makes sense if you think about it. Using the example from the question, every dog has 78 chromosomes. This includes two of each (there are two chromosome 1's, two chromosome 2's, etc. This is visible in the karyotype attached). One set of these chromosomes were inherited from the mother, and one set from the father. Each parent contributed 39 chromosomes (one chromosome 1, one chromosome 2, etc.). If the dog in the question were to have 78 chromosomes in its sperm cells, it would contribute two sets to its offspring. When combined with the chromosomes in the egg cell, the offspring would end up with extra chromosomes. Therefore, both the sperm and the egg cells will have 39 chromosomes, one of each. When combined, they will produce offspring with 78 chromosomes, the proper number.

5 0
2 years ago
Read 2 more answers
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