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mash [69]
3 years ago
15

Which statement about the U.S. Clean Water Act is true?

Biology
2 answers:
Anna007 [38]3 years ago
6 0

Answer:

The correct answer is A.

Explanation:

The clean water act (CWA) was the first U.S law for water pollution.

xeze [42]3 years ago
5 0
<span>The answer is A. it was the first clean water act in U.S. history. 

It was the first clean water act federal law created to solve water pollution through restoration and management. It gave a rule to pollutants to keep the waters clean.
</span>
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Meiosis does PMAT twice! That means there is a prophase I and a prophase II. There is a metaphase I and a metaphase II. Etc… If
AURORKA [14]

Answer:

If there is homologous chromosomes (metaphase I) or duplicated chromosomes/sister chromatids (metaphase II) in the middle of the cell.

Explanation:

Meiosis involves two series of nuclear divisions grouped into meiosis I and meiosis II. Each division has the same number of stages i.e prophase, metaphase, anaphase, telophase etc. Meiosis I involves the separation of homologous chromosomes i.e similar but non-identical chromosomes from each parent.

On the other hand, meiosis II involves the separation of sister chromatids (duplicated chromosome). Since METAPHASE is generally characterized by the alignment of chromosome at the middle of the cell for separation in the anaphase stage, it means that the difference between metaphase in meiosis I and II will be whether it is homologous chromosomes that are in the middle or sister chromatids.

Therefore, according to this question, I would know if the cartoon is in metaphase I or II if:

- there are homologous chromosomes in the middle of the cell (metaphase I)

- there are sister chromatids in the middle of the cell (metaphase II).

4 0
3 years ago
Read 2 more answers
Here plz help? i’m stuck
almond37 [142]

Answer:

I'm sorry. I wanted to try and answer the question but I can't because it isn't clear.

4 0
3 years ago
What is the only organism that does not eat prey?
natka813 [3]

Answer:

The only organism that doesn't eat prey is prob scavengers, because scavengers eat dead organisms, so I don't rlly think dead organisms are preys :3

Explanation:

:3

5 0
3 years ago
Which process in paramecium results in genetic recombination but no increase in population size?
Gala2k [10]
<span>Conjugation in which two cells temporarily combine in order to transfer genetic materials. After combination they then divide again, allowing of the information to pass and replace the previous members of the population.</span>
4 0
3 years ago
Which of the following explains why water is a good solvent for polar and ionic compounds?
Anni [7]

Hi there!

<u>Electronegativity</u> is the concept of how likely an atom is to attract the shared molecules in one of these bonds to itself. We know the molecule water is made up of two hydrogens and one oxygen. The electronegativity of hydrogen is 2.2, and oxygen 3.4. An <u>ionic bond</u> needs at least a difference in electronegativity of 1.6. As the difference is less than that, we can say that water is a covalent molecule. This then wipes out choice B, because it is not ionic, and C, as we have seen it is actually covalent.

Now, we can see the difference in electronegativity between oxygen and hydrogen is still 1.2. This means that while it is not at the point for there to be an ionic bond, there is still a difference in attraction, where the electrons will tend to favor the oxygen more and 'hang around it' more. As electrons are <u>negatively charged</u><em><u>,</u></em> this means that the oxygen will gain a slightly negative charge. This then makes the molecule polar, because it now has a charge within the molecule. This means we have our answer, choice D.

In terms of hydrophobic molecules - they tend to be ones without a charge. (If you're interested in this kind of stuff, I'd search hydrophobic up, and possibly also look into hydrogen bonds).

Hope this helps! Feel free to ask me any other questions you have about this specific problem.

6 0
3 years ago
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