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Zinaida [17]
2 years ago
9

Over the past century, several scientists around the world have made the following observations:

Biology
1 answer:
prohojiy [21]2 years ago
3 0

Mitochondria and plastids were once free living bacteria that underwent endosymbiosis inside a eukaryotic cell, which helped with cell respiration

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If a girl is standing in front of a smooth surface from which a sound is reflected, the girl may hear
katen-ka-za [31]

The correct answer is option D.

If a girl is standing in front of a smooth surface from which a sound is reflected, the girl may hear two similar sets of sounds if she is also near the source of the sound.

For proper reflection of all sorts of energy waves, a hard flat surface is preferable. This helps to reflect waves without losing energy. Hard and smooth surfaces are best for travelling of sound waves because sound is related to pressure.

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3 years ago
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Lakes can be formed as a result of what type of weathering? Select all that apply.
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Well D is an answer.

Explanation:

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2 years ago
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Type I interferons__________________________
Nady [450]

Answer:Type I interferons help protect cells from viral infection. The correct option is B.

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Type I interferon (IFNα/β) is a type of cytokine that provides one of the first lines of host defense against viral infection.

Type I interferons act in a paracrine manner such that it have numerous effects on the surrounding cells, preparing them to ward off possible infection. The primary function is to induce protection against viruses in neighboring, non-infected cells. In the target cells they cause digestion of viral DNA and viral proteins.

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3 years ago
Why do lichens and mosses get mostly replaced by larger plant species during succession?
stealth61 [152]
Lichens and mosses are usually the pioneer plants that are found on barren lands. The two have the ability to survive in this kind of environment because of their minimal energy needs. When lichen and mosses died off, they are usually replaced by bigger plants because they have made the place suitable for the growth of larger plants. The dead parts of lichen and mosses decompose and turn into small particles of soil, this allow other plant species to grow in this location.
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All of the following are health benefits of soluble fiber except
VladimirAG [237]

Answer:

d. stimulates appetite

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The soluble fiber is the one that dissolves in water, and its main characteristic is the delaying gastric emptying, they made you feel full for hours because it creates a viscosity gel that stays in the colon.

This gel covers the colon and prevents gastritis, and get the sugar absorption and realizing slower.

Also, use serum cholesterol, and this is why it helps to reduce heart cardiopathy disease.

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