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marshall27 [118]
3 years ago
11

Minerals are prone to destruction by elements such as oxygen, heat, and acid. True or False

Biology
1 answer:
boyakko [2]3 years ago
7 0

Answer:

True

Explanation:

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Hey can u help me?<br><br><br><br><br>what is photosynthesis?​
den301095 [7]

Answer:

The process of making food by the green plant by using sunlight,water,mineral, carbon dioxide,etc.is called photosynthesis.

hope this not childish.

7 0
3 years ago
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What conclusions can be drawn about the existence of carbon-12, carbon-13, and carbon-14? A) These are forms of carbon and they
Kryger [21]

Answer:

C.

Explanation:

All these carbon atoms are isotopes: they have the same amount of protons (in this case, 6 because carbon always has 6 protons) and the same amount of electrons (6 because the carbons given have a neutral charge).

Therefore, the only thing we are changing is the atomic mass and the amount of neutrons present in each isotope.

In Carbon-12, there are 6 protons, 6 neutrons, and 6 electrons.

In Carbon-13, there are 6 protons, 7 neutrons, and 6 electrons.

In Carbon-14, there are 6 protons, 8 neutrons, and 6 electrons.

5 0
3 years ago
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Climates are described using familiar elements of the weather. Which two of these elements are commonly found in the description
Dafna11 [192]

<u>Answer</u>:

<em>Annual precipitation and average temperature </em>

<u>Explanation:</u>

Weather is referred as the temperature and precipitation recorded daily but climate is the <em>average temperature, precipitation, atmospheric pressure, wind and humidity recorded annually</em>.

Climate is also meant by the average weather of a place.  The elements that are commonly found in <em>description of the climate is annual precipitation and average temperature of a place or region</em>.

Precipitation is defined as product obtained by the <em>condensation of the water vapour present in atmosphere</em> and which falls under the <em>action of gravity.  </em>

7 0
4 years ago
What is the most appropriate method to prepare a sample of cheek cells for PCR?
Dmitry [639]

Answer:

Extraction of genomic DNA

Explanation:

Resuspend the cells(any number), smaller numbers also work, in 10-20 ul of TE buffer or milli Q water. boil for 5-10 min in a waterbath, quick chill, short spin. use the supernatant as a template for PCR.

If cells are very less, u can directly add cells to the PCR reaction without enzyme,boil for 5-10 min in a waterbath, let it cool slowly, short spin. Add enzyme to the supernatant and start the reaction at extension step followed by normal PCR reaction steps.

5 0
3 years ago
A galaxy has less mass than a moon and more mass than a planet.<br> True<br> False
TEA [102]

Answer:

False, major false. A galaxy is a small portion of the entire universe... it contains plants, stars, asteroids, moons are insignificant compared to it. Also, pretty much all moons are larger than planets so that wouldn't even make sense.

7 0
3 years ago
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