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nikitadnepr [17]
2 years ago
7

Why do we have ACE2 proteins?

Biology
1 answer:
Neporo4naja [7]2 years ago
8 0

Answer: It is the key to blocking infections

Explanation: I hope this is right :)

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Why is the pulmonary circulation reduced in the unborn human fetus
Evgesh-ka [11]

Why is the pulmonary circulation reduced in the human fetus? Pulmonary circulation is reduced in the human fetus because the baby gets its oxygen from its mother and does not breath on its own.

5 0
3 years ago
S waves DO NOT have the following characteristic
Wittaler [7]
It is A hope this helps
4 0
3 years ago
quizlet urine is produced by the urine is produced by the ureter. gallbladder. kidney. urinary bladder. urethra.
Step2247 [10]

Answer:

Urine is produced in the kidneys

Explanation:

Urine is a substance which is a mix of urea and water. Urea comes from the liver and other parts of the body but it is made into urine in the kidneys.

5 0
1 year ago
Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 5 liters of natural oil for every 3 liters of
ELEN [110]

Answer:

Total 495 liters of natural oil are needed.

Explanation:

It is given that Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 5 liters of natural oil for every 3 liters of synthetic oil.

It means the ratio of natural oil and synthetic oil is

\frac{\text{Natural oil}}{\text{Petrolyn motor oil}}=\frac{5}{5+3}=\frac{5}{8}

Let in order to make 792 liters of Petrolyn oil he needs x liters of natural oil.

It means the ratio of natural oil and synthetic oil is

\frac{\text{Natural oil}}{\text{Petrolyn motor oil}}=\frac{x}{792}

Equate both ratios,

\frac{x}{792}=\frac{5}{8}

On cross multiplication we get

8\times x=5\times 792

8x=3960

Divide both sides by 8.

x=\frac{3960}{8}

x=495

Therefore total 495 liters of natural oil are needed.

6 0
3 years ago
Help me on number 9 please!
jasenka [17]

Answer:

D

Explanation:

I believe its D because we cross out the first 2 options because the question is asking about the dark line which is the pups and not the adults. if we look D and the lowest point of dark line, we can say its talking about <u>few</u> and 1995 talking about <u>many. </u>

5 0
3 years ago
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