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-Dominant- [34]
3 years ago
11

During fertilization in humans, _______________________.

Biology
1 answer:
sattari [20]3 years ago
5 0

Answer: Option B.

Explanation:

Human fertilization is defined as the fusion of a human egg and sperm, occurs  in the ampulla of the fallopian tube.The fusion of sperm and egg results in  the production of a fertilized egg or zygote cell that initiates prenatal development.

During physical intercourse many sperms releases and enters into uterus. although many sperm can bind to an egg, but in normal case only one fuses with the egg plasma membrane and enters into nucleus and the egg cytoplasm.

Thus, the correct option B.

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Which of these is a piece of evidence supporting the theory of evolution?
nikklg [1K]

Answer:

The correct answer is option A.

Explanation:

Emus are flightless birds that are native to the African part of the geological location. It is the second largest bird on the planet that can not fly but run very fast.

They show similarities with their Australian cousin ostriches. Ostriches are found in Australia, these are the largest bird on the planet. These are also flightless birds and run up to 45 MPH.  

Thus, the correct answer is option A.

7 0
3 years ago
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How can you separate iron filings from sand through which process​
ale4655 [162]

Answer:

Process called magnetic separation

Explanation:

The magnetic separation is a process in which magnetically susceptible material is extracted from a mixture using magnetic force.

This method is also used to separate the mixture of sand and iron fillings as iron is attracted by magnet.

6 0
3 years ago
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Increasing the volume of air that reaches the alveoli and takes part in gas exchange will cause blood pH to:
Karolina [17]

Answer:

B. increase, because the partial pressure of CO2 in the blood will decrease.

Explanation:

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When more air reaches alveoli, the rate of gaseous exchange is increased. More of the carbon dioxide is removed from the blood and is released out of the body via exhalation.

Removal of carbon dioxide from blood would increase the pH of the blood since the partial pressure of CO2 in the blood would decrease.

8 0
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Why do many desert plants have small leaves?
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small leaves protect desert plants from animals that eat plants.

5 0
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weeeeeb [17]
They do not have a cell wall because only plant cells have that. The plant cells have that to help with the process for creating the green color. The animal cells, instead, they have a cell membrane.
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