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Nikitich [7]
3 years ago
8

What does a d u k a r y o t e have that a prokaryote does not

Biology
1 answer:
vaieri [72.5K]3 years ago
5 0
Eukaryotes have a nucleus and prokaryotes don't
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List and briefly describe in your own words the four main points of Darwins theory.
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Individuals of a species are not identical, Traits are passed from generation to generation, more offspring are born that can survive,and only the surviovrs of the competition for resources will reproduce.

Explanation:

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Compare and contrast optical and radio telescope
Umnica [9.8K]

Hallo~~~

When comparing optical and radio telescopes, we know that both of these telescopes detect a certain band of the electromagnetic spectrum.

When contrasting optical and radio telescopes, we know that optical telescopes have higher equipment (polished mirrors, accuracy), and that they depend on weather. Radio telescopes have lower equipment (less precise reflectors), and depend on diff. things such as thermal radiation and man-made emissions.

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3 years ago
Your friend brings you rocks with a thick layer of oxidation weathering, and no other visible signs of weathering. this is a clu
Vsevolod [243]
<span>A moist environment because physical weathering processes such as oxidation take place most quickly in the presence of water. There are three types of weathering, physical, chemical, and biological. For the physical weathering, there are two main types. Freeze-thaw cycles and exfoliation. Obviously the freeze-thaw cycles require water and the exfoliation generally happens through thermal expansion and contraction which doesn't require water. But since neither of these mechanisms were observed, that doesn't indicate if the area was wet or dry. Biological weathering is caused by plants or animals breaking down rocks via chemical (acid) or mechanical (root growth) means. Life generally indicates the presence of water, but since this form of weathering wasn't observed, we still don't have enough data. Chemical weathering is caused by rain water reacting with the rocks to form new minerals and salts. There are several types such as acidic rainwater dissolving part of the rock, and oxidation. With this in mind, let's take a look at the available options. A moist environment because there is a greater density of oxygen in the atmosphere in the presence of water. * Yes, we need a moist environment, but the density of oxygen is fairly constant world wide regardless of how moist or dry the environment is. So this is a bad choice. A moist environment because physical weathering processes such as oxidation take place most quickly in the presence of water. * Water speeds up chemical weathering of all types. So this is the correct choice. A dry environment because the increased albedo of deserts encourages physical weathering processes such as oxidation. * Yes, the increased albedo of deserts does speed up spalling, but oxidation is a CHEMICAL weathering process, not a PHYSICAL one. So this is a bad choice. A dry environment because in the absence of water oxidation is the dominant weathering process. * Water speeds up oxidation quite a bit. And since the observed oxidation is thick, there's been quite a bit of weathering. So this is a bad choice.</span>
6 0
3 years ago
Which season is occurring in the southern hemisphere when earths northern hemisphere is tilted toward the sun?
Ksju [112]
The southern hemisphere would be experiencing winter :)

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3 years ago
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