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wariber [46]
3 years ago
10

What are the two factors that causes the cycle of the seasons

Biology
2 answers:
bonufazy [111]3 years ago
5 0
The tilt of earth's axis and earth's revolution around the sun hope i helped
adell [148]3 years ago
3 0
The tilt of earth on its axis 

mark me brainliest if i helped!! :)
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castortr0y [4]

Answer:

Your answer is B). Massive stars undergo a supernova at the red giant phase.

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2 years ago
Cells can conduct many task, including which of the following​
julia-pushkina [17]

Answer option:

1. duplicate themselves

2. convert energy

3. selectively exchange materials

4. all of the above

Answer:

4. all of the above

Explanation:

Cells carry out many functions. They are able to replicate their DNA and divide into two identical daughter cells in order to proliferate.

They can convert glucose into cellular energy (ATP) through respiration in the mitochondria

They can exchange materials with the outside environment via the selectively permeable cell membrane, endocytosis and exocytosis and active transport via membrane proteins.

Therefore, all of the above is correct.

3 0
3 years ago
Typically, urea broth is filter-sterilized because autoclaving breaks down the urea. However, even unsterilized broth rarely pro
Anni [7]

Answer:

When organisms use urea, ammonia is generated during incubation, which makes the reaction of these media alkaline

Explanation:

Urea broth preparation:

Suspend 3.87 grams of the medium in 100 ml of distilled water without heating. When the powder dissolves, sterilize by filtration. Dispense quantities of 0.5 to 2 ml in small sterile tubes. Larger volumes may be used but the reactions will be slower. Do not sterilize in autoclave.

Do not boil the medium.

If no filter is available, the medium can be sterilized at 100-110 ° C for 10 minutes. If the medium is prepared and inoculated immediately, it provides good results without sterilization.

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D

Explanation:

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