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lana66690 [7]
3 years ago
9

17. According to the Mohs Hardness Scale, what's the approximate hardness of topaz?

Biology
1 answer:
MAVERICK [17]3 years ago
5 0

Answer: (A) the answer is 8

Explanation:topaz on the scale is no 8, followed by corundum no 9 and then diamond which is the hardest on no 10

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PLEASE HELP WOTH BIOLOGY!! WILL GIVE BRAIN!!
fenix001 [56]

Answer:

D/4

Explanation:

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6 0
2 years ago
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What disease causes an imbalance of the blood glucose levels
jekas [21]
"Diabetes" is one of such diseases which cause an imbalance of the blood glucose levels.

Hope this helps!
7 0
2 years ago
Dengue fever is an infectious disease of humans that is caused by a virus. There are four main viral strains, and an individual
Yuri [45]

Answer:

12

Explanation:

Suppose the four different strains are P, Q, R, S. Thus, the first infection can be from any of the four strains and it occurs in 4 ways.

Since an individual cannot be infected again with the strain from which he/she is been previously infected;

Then, at the second time;

The possible number of strain to be infected with = 4-1 = 3 ways

Thus; the number of possible different levels of severity can be viewed by forming two lettered word  P, Q, R, and S without repetition which is:

= 4 × 3

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3 years ago
Which phylum of protozoa contains organisms that are non-motile, obligate intracellular parasites?.
Korvikt [17]

Answer:

Apicomplexa

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4 0
2 years ago
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Maksim231197 [3]

I'm pretty sure its 'have different structures and different functions' because a plasma membrane is also known as a cell membrane and it controls what enters or exits the cell whilst the cell wall provides structural support. They are 2 different structure with different functions.

Hope this helps! :)

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