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just olya [345]
3 years ago
15

Will mark brainliest!

Chemistry
1 answer:
True [87]3 years ago
3 0

Answer: 4. Two forms of single genes

Explanation:

Two different forms of a single gene are called 'alleles'.

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When biological samples of unknown origins are discovered at a crime scene, what should investigators do?a. assume no pathogens
adoni [48]

Answer: assume pathogens are present and treat the samples accordingly

Explanation:

When investigators are unable to conclusively ascertain the source of a biological sample found at a crime scene, the correct thing to do is to treat it as if pathogens are present in it and handle it according to set rules on how to handle pathogens.

This is done to ensure that if a pathogen is indeed present, it would not cause a health emergency by infecting those who come in contact with the samples at the scene.

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3 years ago
How do you use the changes in the phase of water to keep you cool?
sineoko [7]

Answer:

by freezing

Explanation:

8 0
3 years ago
What is the molar mass of h2
alekssr [168]

Answer:

The answer is one

Explanation:

I will just type any rubbish here bcuz my answer should be more than 20 words..... Just know the answer is 1

3 0
3 years ago
A mover packs books, CDs, and DVDs into a moving box. If the box contains 6.5 kg of books, 1.5 kg of CDs, and 2.0 kg of DVDs, wh
mariarad [96]
Given: 
<span>M1 = 6.5 kg of books
</span><span>M2 = 1.5 kg of CDs
</span><span>M3 = 2.0 kg of DVDs

Required: percent by mass of each object

Solution:
First, we calculate the total mass.

M = 6.5 kg + 1.5 kg + 2.0 kg =  10 kg

Percent by mass is calculated by getting the ration of the mass of an object and the total mass multiplied by 100 to get the percent.

%M1 = 6.5 / 10 x 100 = 65%
%M2 = 1.5/10 x 100 = 15%
%M3 = 2.0/10 x 100 = 20%</span>
4 0
3 years ago
Read 2 more answers
Science is a unique field of thought because it relies on _______ to describe the world. A Teachers and students B Observations
Norma-Jean [14]

Answer:

B) Observations and experimentation

Explanation:

this is the most suitable words to describe how is Science used in describing the world. we collect the  knowledge in organized way and provide it with explanations and start to predict about the future world

ِAny Inventions are based on Science and no Inventions without Observations and experimentation

No one of us have went to a chemistry or a physics labs without using Observations and experimentation

6 0
3 years ago
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