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qaws [65]
3 years ago
12

Someone plz help me :(

Biology
2 answers:
ElenaW [278]3 years ago
6 0

A. Warm air rises

Hot air is less dense than cold air, which is why cold air sinks because it absorbs less energy than warm air.

Hope it helped:)

Angelina_Jolie [31]3 years ago
4 0

A. Warm air rises

Explanation:

Warm air is less dense than cold air so it rises

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In DNA replication, which of the following events happens during both leading and lagging strand synthesis?
Scilla [17]

On the leading strand, DNA synthesis occurs continuously. On the lagging strand, DNA synthesis restarts many times as the helix unwinds, resulting in many short fragments called “Okazaki fragments.” DNA ligase joins the Okazaki fragments together into a single DNA molecule

3 0
4 years ago
Edwin Hubble was an American astronomer who played a crucial role in collecting evidence to support the theory that the universe
Masja [62]

Answer:

C

Explanation:

These type of questions leave a great deal to be desired. There is no mention of which way Hubble used and manipulated data. He studied the variations in light to determine his conclusions.

Nor is there any mention of what Lomonosov did to come to the conclusion that conservation of mass is a constant.

We don't know what was done to get the results. Hubble was studying the universe; the conclusions made by Lomonosov depended on lab equipment that was very delicate (I'm assuming). I doubt he manipulated variables. He measured what he got.

I think the answer is C, but the question has so many assumptions that it is hard to know what answer to pick.

5 0
3 years ago
Ellis-van Creveld syndrome is a recessive genetic disorder that includes the characteristics of short stature and extra fingers
e-lub [12.9K]

Answer:

D. The frequency of the Ellis-van Creveld allele is 0.0447 in the isolated population and 0.0026 in the general population, which suggests that genetic drift has occurred in the isolated population.

Explanation:

If we assume that one gene is involved in Ellis-van Creveld syndrome and we name that gene with A, then the genotype of the syndrome would be aa.

In population 1, the frequency of the syndrome is 1/150000=0.0000066(it is the frequency of the aa gentotype)

In population 2, the frequency of the syndrome is 1/500=0.002

According to Hardy-Weinberg equilibrium

p2+2pq+q2=1 (p2 is the frequency of the dominant homozygous, 2pq is the frequency of heterozygous and q2 is the frequency of the recessive homozygous).

q or the frequency of the Ellis-van Creveld allele in Population 1 is \sqrt{0.0000066} =0.0026

q or the frequency of the Ellis-van Creveld allele in Population 2 is \sqrt{0.002} = 0.0447

6 0
4 years ago
What is the definition of individual organisms
cluponka [151]

Answer: The definition of an individual organism is:

"one genome in one body".

Explanation: This definition is based on the physiological and genetic criteria but it would produce some problems if discussed in the colonial organisms.

3 0
4 years ago
As erosion removes the tops of mountains, the crust will rise upwards. This is an example of _____.
DiKsa [7]

Answer:

As erosion removes the tops of mountains, the crust will rise upwards. This is an example of isostatic adjustment ( last choice).

6 0
4 years ago
Read 2 more answers
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