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2 years ago

How many national parks are in the u.s

Biology

1 answer:

Brrunno [24]2 years ago

8 0

Answer:

the us has 63 national parks, which are congressionally-designated protected areas operated by National Park service, an agency of the department of the interior.

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Which water source becomes polluted as it travels over the earth

lawyer [7]

I believe a river is the answer

4 0

3 years ago

Read 2 more answers

"A blood bank for a local hospital has a supply of plasma for which some have been contaminated with a virus causing hepatitis.

djverab [1.8K]

Answer:

The probability that the victim not getting hepatitis virus is 0.4547

Explanation:

We have given that 7 of 48 units of blood is contaminated with virus causing hepatitis.

So probability of getting hepatitis virus is $=\frac{7}{48}=0.1458$

So probability of not getting hepatitis virus = 1 - 0.1458 = 0.8542

It is given that severely injured accident victim given 5 units of plasma

So probability that the victim not getting hepatitis virus = $0.8542^5=0.4547$

So the probability that the victim not getting hepatitis virus is 0.4547

5 0

3 years ago

What is the job of the nucleus?

never [62]

Answer:

It controls what the cells are doing and carries your genes. It acts as the brain of a cell.

Explanation:

4 0

2 years ago

Read 2 more answers

Which of these mineral properties cannot be used to identify a mineral

Ksivusya [100]

Hardness, hope this helps

6 0

2 years ago

Lactose is a disaccharide formed by the formation of a ________ bond between glucose and ________.

alexira [117]

Answer:

glycosidic; galactose.

Explanation:

Lactose is also known as table sugar. Lactose is present naturally in milk and a water soluble sugar.

Lactose is a disaccharide sugar made up of glucose unit. The lactose consists of glucose and galactose linked through the beta 1,4 glycosidic linkage.

Thus, the correct answer is option (2).

5 0

3 years ago