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ICE Princess25 [194]
3 years ago
7

Why is a DNA molecule called a double helix?

Biology
2 answers:
krok68 [10]3 years ago
5 0

Answer:

A

Explanation:

Because there are two DNA strands in the DNA molecule and they both rotate around each other in a helix formation. So two helixes = double helix.

kap26 [50]3 years ago
5 0

Answer:

A

Explanation:

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Due today i have a C and need to bring my grade to a B and will mark brainliest
Ostrovityanka [42]

Answer:

-What types of toxins were found in the waters of the Lower Passaic Superfund site?

DDT and agent orange were found in the waters of the Lower Passaic Superfund site.

-How were some fish able to survive PCB levels thousands of times higher than sensitive fish can withstand?

in some tolerant fish, the trigger for the changes that can be caused by PCB levels are can be turned off which allows some fish to survive levels of PCB thousands of times higher than the levels affecting sensitive fish.

-What is the advantage of a large population for rapid evolution?

The advantage of rapid evolution is that the animals can survive and not get killed off.

-Do you think all species would be able to evolve adaptations to help them survive pollutants? Why or why not?

I don't think that all fish can get speedy evolutions like the killfish did because researchers think that they got a rare mutation which helped them survive. However as researchers say, in smaller populations with less diversity the chances that a rare mutation might happen is small.

-What will likely happen to these toxin-adapted fish if the waters are eventually cleaned up?

Once the water becomes clean, a tolerant fish with the mutation won't do as well as a sensitive fish would do.

Explanation:

Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day! Thank you : )

4 0
3 years ago
The table shiws data for two groups of plants, one grown with fertilizer and the other without fertilizer​
Yakvenalex [24]

Answer:

33.5

Explanation:

the mean height is the average. Simply add up the height of all the plants with fertilizer and divide by 5 (Being the amount of plants with fertilizer)

30.5+32.1+40.6+30.5+33.8 = 167.5

167.5/5 = 33.5

AH(average height)= 33.5

3 0
3 years ago
How do warm ocean currents affect the weather?
umka21 [38]

Answer:

Increase the temperature

Explanation:

Warm ocean currents are directed movements of the sea water. Elements such as the wind can facilitate and carry their movement increasing the temperature of the environment.

5 0
3 years ago
I’ll mark as BRANLIEST!!
dexar [7]
Mutation ( that’s what I put )
7 0
3 years ago
There is a drought in an area in which white-tailed deer live. classify the drought as a density-independent factor or a density
Leya [2.2K]
For the answer to the question above, <span>I think the answer is that Density-independent because it is an abiotic factor which is a natural phenomenon that occurs in the environment, it also affects the limiting factors of the environment.
</span><span>I hope this helps.
</span>
5 0
3 years ago
Read 2 more answers
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