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pochemuha
4 years ago
9

I need help with 7 plzzzzzz

Biology
2 answers:
Firdavs [7]4 years ago
8 0
Day and night is caused by the Earth's axis' rotation. The Earth is tilted about 23.5<span>º and every 12 hours or so, it changes every night.

Correct me if I read it wrong.</span>
Marianna [84]4 years ago
4 0
What causes day and night?

The Earth is constantly spinning on it's axis so the Sun and Moon face different areas of the Earth, causing day or night time.
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Bob has a genetic condition that affects his skin Bob's wife, Eleanor, has normal skin. No one in Eleanor's family has ever had
azamat

Answer:

X linked dominant.

Explanation:

The autosomal disease are not specifically affect the individual sex and may affect both the males and females in nearly equal proportion. X linked disease affects to the specific sex only whether male or female.

Bob has the skin disease and her wife is normal. All there sons are normal but daughters are affected by the disease. This might occur that the disease gene is located on the X chromosome of Bob. This X chromosome is transferred to all the daughters and daughters shows the disease that means the gene of the disease is dominant in nature.

Thus, the correct answer is option (b).

5 0
3 years ago
I'll mark brainliest...
myrzilka [38]
RNA because i just took the test
5 0
3 years ago
Read 2 more answers
A single celled paramedic is placed in a hypotonic solution.what will happen to the cell?​
Gnesinka [82]

When a single celled paramedic is placed in a hypotonic solution, the cell swells and then bursts.

<h3><u>Explanation:</u></h3>

Hypotonic solutions are the solutions that contain more water than present in a cell. Hence, when an animal cell is placed in a hypotonic solution, the cell will undergo osmosis. Osmosis is the movement of any form of solvent through a plasma membrane to a higher concentration from a lower concentration until the the external concentration matches the inner one.

To put it in simple words, when a single animal cell is places in a solution which has more water than other solutes, the water will invade the cell until it can accumulate the amount that equalizes the inner and external concentration. The cell will begin to swell up until there is no more space and finally, it will burst. For example, when you put water on a cloth that has blood stain on it, the cells will burst and make the stain worse than before.

5 0
3 years ago
I need some helppp 40 points...
kherson [118]

Answer:

5: The phenotype for both parents is being tall.

6: 25%

7: 50%

8: 25%

Explanation:

5: We are shown that tall plants are dominant over short plants, and the genotypes of both parents are Tt (tall, short). This means that both parents will be tall.

6: The Punnet Square shows us that 1 out of 4 offspring are TT, 1/4 is 25%

7: The Punnet Square shows us that 2 out of 4 offspring are Tt, 2/4 is 50%

8: The Punnet Square shows us that 1 out of 4 offspring are tt, 1/4 is 25%

8 0
4 years ago
Were the first organisms that released oxygen as a by-product of photosynthesis.
FrozenT [24]

Answer:

Blue green algae or cynobacteria

6 0
3 years ago
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