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Scrat [10]
3 years ago
14

The mohs scale measures a mineral’s _____. a. luster b. structure c. density d. hardness

Biology
2 answers:
uysha [10]3 years ago
7 0

the hardness is what it measures

VMariaS [17]3 years ago
4 0
The Mohs scale measures D, a mineral's hardness.
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natima [27]

Answer:

Gravity?

Explanation:

These are the things needed for life: water, air, food, light, shelter, and space. It doesn't include gravity.

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3 years ago
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A study was conducted in men aged 40-70 in order to determine whether exercising for 2 or more hours per week decreases the like
Blizzard [7]

Answer: alternative A.

Explanation: In this case, we will consider people that already have had a heart attack. In this specific group of 1,000 people, 236 exercised regularly and had gone through this situation.

We can infer that 23.6% of people who exercised regularly have experienced that by dividing 236/1,000= 0.236= 23.6%.

If 236 people exercised, 1,000-236=764 didn't exercise regularly prior to their heart attacks, so 74.6% were considered to be sedentary.

If there's 0.236 chance out of 1 to exercise and still have a heart attack compared to 0.764 out of 1 to be sedentary and have the same experience, we can divide both ratios to compare them, so 0.236/0.764= 0.3089.

Alternative A claims that people who exercise have around 0.5 chance of having heart attacks compared to people who don't. Since our ratio resulted in 0.3089, we consider this number the closest to 0.5. Alternative <u>B is absurd because in order for people who exercise to have 2x the risk compared to people who don't, the number of people who exercised and went through that must be 2x bigger than people who didn't</u>. Alternative <u>C doesn't apply as well, because we already verified that the chance people who exercise have a heart attack equal to 23,6%. </u>

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3 years ago
Viruses _____.
Montano1993 [528]

viruses are tiny bundles of genetic material which is carried in a viral coat.

<u>Explanation:</u>

  • The virus is generally a parasite that needs a host to become active and to reproduce. It cannot reproduce without the host.  
  • The tiny bundle consists of genetic material and protein. The virus consists of capsid and nucleic acid. This capsid is said to be the protein coat.  
  • This capsid consists of either  RNA or DNA. virus replicate themself within the host body by using its genetic material along with the mechanism of the host.  
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Jared Harless shattered his elbow in a snowboarding accident and decided to visit a doctor at Smith Union Hospital for treatment
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<span>Well this isn't actually a question but to market to a company like this you first have to impress a small number of people in a single chain of command. Your products don't have to be marketed to a company as a whole or to a single rung of the food chain but to each successive member in a hierarchy in the company. Firstly to the employee, then to their management then to the ones who actually making the decision to buy.</span>
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3 years ago
Over a period of two generations, the frequency of green dung beetles in a population shifts from 75% to 71% while the frequency
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This is an example of microevolution.

Microevolution
represents a small change in the genetic structure of the population. These changes manifest through the change in the allele frequencies of genes like in the case of dung beetles.
The causes of microevolution are evolutionary mechanisms, natural selection, genetic drift, mutations and gene flow.
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