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Anon25 [30]
3 years ago
8

Complete the following statements to accurately describe examples of organisms affecting the Earth’s atmosphere, and subsequent

effects on other living organisms.
Starting around 2.7 billion years ago, photosynthesis by cyanobacteria, and later plants, pumped( Carbon dioxide, methane, O2) into the atmosphere. This caused the decline of anaerobic bacteria and allowed the rise and diversification of animals as seen in the (Cambrian, Carboniferous, Cretaceous) event around 500 million years ago.

Early vascular plants ( Captured, Released ) CO2 starting before the (Cambrian, Carboniferous, Cretaceous ) period that began around 350 million years ago, leading to lower temperatures and allowing the seed plants to outcompete seedless plants.

Modern human activity has raised (carbon dioxide, methane, oxygen) levels in the atmosphere to over(20%, 40%, 200ppm, 400ppm)., leading to higher temperatures, and contributing to extinctions of other specie
Biology
1 answer:
matrenka [14]3 years ago
8 0
Our, j’mealea oiu toava granega sesis.
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D. Adhesion and Cohesion
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Which statement best explains the significance of meiosis in the process of evolution within species?
Len [333]
There exists the same question with the following choices.

1.Meiosis produces eggs and sperm that are alike. 
<span>2.Meiosis provides for chromosomal variation in the gametes produced by an organism. </span>
<span>3.Equal numbers of eggs and sperm are produced by meiosis. </span>
<span>4.The gametes produced by meiosis ensure the continuation of any particular species by asexual reproduction.
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The correct answer is <span>2. Meiosis provides for chromosomal variation in the gametes produced by an organism. It happened during cross-over and segregation and law of independent assortment.</span>
4 0
3 years ago
in the northern hemisphere, a wind blowning from the south to the north will cause a current of water in which direction
hichkok12 [17]
Hello,

Here is your answer:

The proper answer to this question is "east".

Here is how:

When the wind blows from the south to the north the current of water will go to the east because of the direction of the air is blowing.

Your answer is east.

If you need anymore help feel free to ask me!

Hope this helps!
5 0
3 years ago
What is the cancer causing sgent in tobacco?
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3 years ago
Consider a locus in which the fitness of AA and Aa genotypes are greater than the fitness of aa genotype. In addition, this locu
Elis [28]

Answer:

Will never go to fixation.

Explanation:

Mutation is the sudden, heritable change in the genetic sequence of the organisms. The mutation might cause the particular disease in the organisms.

The  gene fitness leads to the increase in the gene frequency in the upcoming generations. The gene will fix in the population when their i no selection and no mutation. Since, the information given in the question states that mutation is acting, so the A allele will never fix in the population.

Thus, the answer is option (c).

5 0
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