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Westkost [7]
3 years ago
10

Help me ls 20 points !!! i will mark brainliest just someone help me quick

Biology
1 answer:
QveST [7]3 years ago
5 0

Answer:

Mutations and sexual reproduction is the right answer

Hope it helps:)

Please mark me the brainliest if you won't mind:)

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Which of the following wavelengths of light are able to penetrate the Earth’s atmosphere and best viewed through a reflecting te
MariettaO [177]

Answer:

c. Visible Light Wave

Explanation:

The electromagnetic radiation spectrum can be divided into seven types of wavelengths of light, which are classified according to the decrease in wavelength and the increase in energy and frequency: 1-radio waves, 2-microwaves, 3-infrared light, 4-visible light, 5-ultraviolet, 6-X rays and 7-gamma rays. The atmosphere is not permissible to all types of wavelengths of light, thereby acting as a natural barrier that protects against harmful radiation waves. All the range of visible light can penetrate the Earth's atmosphere, while most radio waves can penetrate through this barrier. Finally, only some wavelengths of infrared and ultraviolet radiation can pass through the atmosphere.

4 0
4 years ago
A yellow female Labrador retriever was mated with a brown male. Half of the puppies were brown, and half were yellow. Explain ho
Over [174]

Answer:

The first male was bb Ee, and the second male was bb EE.

Explanation:

In Labradors coat colour is controlled by two genes. Suppose the two genes are B and E. B produces black colour and recessive form bb gives brown colour. Gene E is epistatic over gene B in its recessive form which means that ee will produce yellow colour regardless of the genotype present of B gene.

The first case is possible if the female lab is bbee (yellow) and the male lab is bbEe (brown):

bbee X bbEe

        bE      be

be  bbEe    bbee

So half of the offspring will be brown (bbEe) and half of them will be yellow (bbee)

The second case is possible if the same female bbee mates with a brown male of different genotype which can be bbEE:

bbee X bbEE

         bE

be   bbEe

So all offspring will be brown (bbEe)

Hence, the first male was bbEe and the second male was bbEE.

6 0
3 years ago
The conlusion of a study should always be that the hypothesis
nadezda [96]
<span>The answer to the question is false</span>
5 0
4 years ago
Read 2 more answers
Why is natural erosion a beneficial process?
Arturiano [62]

Answer:

A

Explanation:

it helps create fertile soil (ed(g)enuity correct answer)

6 0
3 years ago
What is NOT enough to sustain swimmers going at top speed
mixer [17]

Answer:

To swim faster

Reducing the drag. As with all the other tips here this one is not about how strong you are as the right technique smoothes out your swimming using your strength in a much more efficient way.

Work on your kicks.

Secrets of good propulsion.

Balance

Slightly spread your fingers.

6 0
3 years ago
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