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zheka24 [161]
3 years ago
9

There are almost 10,000 known bird species on the planet. How did they evolve into so many unique forms?

Biology
1 answer:
olga55 [171]3 years ago
7 0

Answer:

Natural selection.

Explanation:

Imagine in the beginning there was a single species of bird. Naturally, this bird had to expand to the rest of the world, and was distanced as the continents drifted off. But this bird had to cope with various climates and environments. So the bird would gradually mutate over time. The bird in the jungles of central america would develop different colors and a shaped beak, and would better help it survive. This led to being the new normal for birds of this area. It would evolve to cover all the surviving birds in the region, until it is so drastically changed then it is a new species. There are so many different environments, each with its own challenges to overcome, so so many different bird evolve to survive them.

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Explain how this experiment showed that gene flow was not the cause of antibiotic resistance.
Alenkinab [10]

Answer:

Due to no transfer of resistance allele.

Explanation:

The gene flow was not the cause of antibiotic resistance because the characteristics can't be transferred from one generation to the next generation. The organisms are evolved to become an antibiotic resistance due to their environmental conditions and this resistance quality is only present in the existing population and the alleles that are responsible for this resistance can't be transferred from the bacteria to the next generation so the experiment showed that gene flow was not the cause of antibiotic resistance

4 0
3 years ago
How do airplanes stay in the air?
victus00 [196]

Answer:A plane's engines are designed to move it forward at high speed. That makes air flow rapidly over the wings, which throw the air down toward the ground, generating an upward force called lift that overcomes the plane's weight and holds it in the sky. ... The wings force the air downward and that pushes the plane upward.

6 0
3 years ago
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here is a food chain in a meadow. Use this food chain to answer this question. Grass, Field Mouse, Corn Snake, Hawk Which is the
Aleks [24]
Plants are called producers because they make their own food. So the grass is the producer.
8 0
4 years ago
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Anna007 [38]
So the the main forces that keep the water on the surface of the planet are to do with plate tectonics. If the plates were to stop moving, the water probably would eventually be absorbed into the interior, although this process would take a very long time indeed.
7 0
3 years ago
"describe how prolonged immobilization results in muscle injury"
andrey2020 [161]
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5 0
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