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Inga [223]
3 years ago
8

6. How did Earth's atmosphere change during Precambrian time?

Biology
2 answers:
Oliga [24]3 years ago
5 0
B is the best answer for this question
Sveta_85 [38]3 years ago
3 0

Answer:Precambrian oxygen was quickly used up by algae and plants.

Explanation:Around three billion years ago, the atmosphere of earth during the Precambrian time was virtually devoid of oxygen. The oxygen was produced as the byproduct of the photosynthetic activities of the cyanobacteria. The level of the gas raised and reached upto one percent about 2 billion years ago

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3 years ago
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Which type of organism most likely evolved first?
Irina-Kira [14]

Answer:

Option A) Simple Prokaryotes.

Explanation:

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Result: Simple Prokaryotes was the first life on earth.

6 0
3 years ago
How does each animals specific environmental needs (food, water, shelter) affect its living conditions in a zoo?
777dan777 [17]

Answer:

in many ways

Explanation:

if the animal does not receive the same nutrition that it would in the wild, the animal will become weaker. If the climate of the zoo is very different than the animals natural habitat, they will struggle to maintain homeostasis. If a dolphin, for example, is in a tank that is too small, it will struggle to grow and develop.

7 0
3 years ago
Can you help me with Questions 2 and 3?
vodomira [7]

bpwhamburgorchardpark.org  Has a short video on it

4 0
4 years ago
Identical twins are produced from the same sperm and egg (which splits after the first mitotic division), whereas fraternal twin
natulia [17]

Answer:

This is 25%

Explanation:

Analysis, Since the dominant brown eyed  parents  produce blue eye child, this shows they are heterozygote dominant

However,this fraternal twin is not genetically identical, due to the blue eye color,(recessive) but the fact remain that they  are the parents.(because he inherited the recessive allele from each of the parent)Therefore the probability is 25%.

This is because he is the only one out of the 4 kids( based on Mendelian fashion) this is  1/4,25%

6 0
3 years ago
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