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antiseptic1488 [7]
2 years ago
8

Please help me i need help

Biology
1 answer:
VLD [36.1K]2 years ago
8 0

Answer:

the image is blurry

Explanation:

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A male cardinal's red color is an example of a trait affected by natural selection. The females of the species choose mates
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Answer:

In the cardinals, if the females start using a different criterion than the color of the feather when they choose couple, most likely to happen is that decreased variation in the shades of red because no form of the trait is advantageous.

Explanation:

Options for this question are:

  • <em>Increased variation in the shades of red because the selection pressure has been relieved.</em>
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In the context of natural selection, male cardinals court females using the coloring of their feathers as a form of sexual selection. This means that the shades of red in the feathers are a selection criterion in these birds, and the more visible shades represent an advantage.

But, if the selection criterion was not the color of the feathers, this trait would no longer represent an advantage in the competition between the males to be chosen as a mate. Instead, the trait that would determine sexual selection would be the one that experiences an increase in its variation<em>.</em>

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2. Why is this change in global temperature a concern
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Past climate changes led to extinction of many species, population migrations, and pronounced changes in the land surface and ocean circulation. The speed of the current climate change is faster than most of the past events, making it more difficult for human societies and the natural world to adapt.
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The energy found in atp molecules synthesized in animal cells comes directly from
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he plan, now called the Delta Conveyance Project, is an attempt to shore up the reliability of critically needed water deliveries to the south state while improving the fragile ecosystem of the Sacramento-San Joaquin Delta

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