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Kruka [31]
2 years ago
12

Either an element or mpound that cannot be physically separated

Biology
1 answer:
stira [4]2 years ago
7 0

Answer:

Substance

<u>Review</u>:

  • <u>Element</u>:

⇒ One of a class of substances that cannot be separated into simpler substances by chemical means.

<u>Compound</u>:

⇒ A pure substance composed of two or more elements who composition is constant.

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The body monitors fat stores by assessing levels of the hormone ____, which is produced and secreted by fat cells.​
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3 0
3 years ago
How does crossing over in meiosis result in genetic variation?
Aneli [31]

Cross over is the first  way genes are shuffled to give rise to genetic diversity. Cross over takes place in sexual  reproduction.  The normal way that cross over occurs is chromosomes line up side by side and break off pieces of themselves, then trade those pieces with each other.

If they break the pieces at the same locus in the sequence of base pairs, the result is an exchange of genes called  genetic recombination and it ensures that the daughter cells produced  have a different genetic makeup from the parent cell and thus diversity occurs.

  

8 0
3 years ago
Which type of cell can not reproduce by Mitosis?
zvonat [6]

Answer:

Which type of cell can not reproduce by Mitosis?

Blood cells after giving blood

C Nerve cells in the brain

Cells in your digestive tract

Skin cells on the hand

0/1 pts

Explanation:

3 0
3 years ago
Hydroelectric dams are often used to generate
inysia [295]

Answer:

Potential & Kinetic energy.

Explanation:

The water used gains potential energy overtime before it is converted to mechanical (or kinetic energy). This can be explained by the water having increased potential energy as it flows at an equal altitude, but converting to kinetic energy as it flows downhill, or over the dam.

This kinetic (or mechanical) energy is then converted to traditional electricity. This process is also an example of a renewable resource being utilized for everyday things (such as powering cars, homes. or charging batteries).

7 0
3 years ago
HELP ASAP!!!!!!
stepladder [879]

Answer:

The answer is D I am pretty sure plz help me with the question

Explanation:

A tomato plant grew 6 inches the first week, before slowing to an average of 0.5 inch per day.  How many days will it take before the tomato plant reaches a height of 16 inches?  Use the equation 16 = 0.5d + 6

4 0
3 years ago
Read 2 more answers
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