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pickupchik [31]
3 years ago
11

Which statement describes one feature of a mineral's definite chemical composition?

Biology
1 answer:
Anna11 [10]3 years ago
8 0

Answer:

It always contains certain elements

Explanation:

Just took the test

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Pollution resulting from an oil spill is categorized as point source pollution. true or false?
Musya8 [376]

Answer:

true

Explanation:

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3 0
3 years ago
Enzyme found in retroviruses that produce dna from an rna template. True or False
grandymaker [24]

Answer:

<h2>True</h2>

Explanation:

1 .Reverse transcriptase (RT) is an RNA-dependent DNA polymerase enzyme which makes DNA from RNA..  

2. RT makes double-stranded DNA molecules from ssRNA ( single stranded RNA) molecule using it as a template.

3. Retroviruses like  HIV contain Reverse transcpritase (RT) enzyme, which uses the RNA molecule as template and make DNA from it and after that, virus make multiple copies of itself.

4. Reverse transcriptase enzyme make DNA reverse transcrptionally from RNA the process known as RNA dependent DNA polymerase.

5. It was  first discovered in retroviruses.

7 0
3 years ago
Which of the following is not a step in the process of natural selection
Paraphin [41]

Answer:

A step that is not part of natural selection is people select which individuals breed and which ones do not.

Explanation:

Natural selection is a process in which favorable or unfavorable environmental conditions determine the evolution of species, producing differences in their genotype over a long period of time.

As its name indicates, it is a natural selection, in which no intervention by people is contemplated, so that <u>people cannot determine which individuals breed</u>.

Natural selection implies that the characteristics on which the environment influences are inheritable, that there is genetic variability in the population and that the variability of these characteristics implies the ease of reproduction and survival capacity.

<em>The other options do form part of natural selection, since they are based on the three premises of this process: </em>

  • <em>Inheritable characteristics. </em>
  • <em>Genetic variability. </em>
  • <em>The variability of characteristics influences reproduction and survival.</em>
4 0
4 years ago
What are the two part of the nerves system?<br><br> name the three part of the nervous system?
Genrish500 [490]
Use Google good source
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3 years ago
What is the purpose of your experiment? Develop a hypothesis for the experiment.
Maksim231197 [3]
Well what’s your experiment
6 0
4 years ago
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