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never [62]
2 years ago
11

Worth 10 pts!Please answer ASAP!

Biology
2 answers:
creativ13 [48]2 years ago
7 0

Answer:

Its changable

Explanation:

Thats the answer

Elena L [17]2 years ago
6 0

Answer:

the correct answer is B it is changeable

Explanation:

Science knowledge may change due to the development of new technics for observing investigations also through new ways of thinking or framing the questions asked.

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Which best describes how Keisha can improve these instructions to better help her friend find the library
Katyanochek1 [597]

The best improvement to these instructions that Keisha can make
immediately and easily is to describe where the instructions start from. 

Does the route start from Keisha's house?  From her friend's house? 
From my house ? 

Knowledge of the coordinate reference frame makes a big difference,
and it's essential.
4 0
3 years ago
Urine is made of _________​
scZoUnD [109]

Answer:

Answer is A

Explanation:

Urea consists of carbon, nitrogen and oxygen. You can find it in urine, sweat, blood and milk in mammals. In its most concentrated form, it is urine. Urea is a crystalline compound, and the nitrogen content is always at least 46 percent when dry.

6 0
2 years ago
An envelope is used by viruses to
Lerok [7]

Answer:

Spread

Explanation:

People use envelopes very often. The germs people carry are put into the envelope and then it's sent out to many others.

4 0
3 years ago
Please help me thank you
alekssr [168]

Answer:

3. A 2. B. 1. B

Explanation:

Im not to sure about 1. but other than that your good sorry if this didn't help

5 0
2 years ago
CD8 helps with recognition of which of the following molecules on the surface of a cell?
Shalnov [3]

Answer:

MHCI

Explanation:

Major histocompatibility complex I (MHCI) is present on the nucleated cells of the body. Endogenous pathway represents the pathway of MHC class I molecules.

MHCI display peptide fragment of proteins to the cytotoxic T cells with the help of CD8 ( Cluster of differentiation). CD8 binds with the MHCI and expressed on the surface of cytotoxic T cells.

Thus, the correct answer is option (D).

7 0
3 years ago
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