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xxTIMURxx [149]
3 years ago
6

What is stem cell?

Biology
2 answers:
Whitepunk [10]3 years ago
5 0
It is (A). cell that can divide for long periods of time while remaining undifferentiated.
Andru [333]3 years ago
4 0
A stem cell is a cell which has the potential to differentiate, so a stem cell is undifferentiated.

The answer is (A) .
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Part C
Butoxors [25]

Minerals are identified according to their properties. One of these properties is their breaking tendency: <em>cleavage</em><em> or </em><em>fracture</em>.<em> Cleavage: Calcite, mica, muscovita, pyroxene. Fracture: Quartz, Asbestos, Limestone.</em>

<u><em>Note</em></u><em>: Since I do not know which your 10 minerals are, I will provide examples of each type according to the breaking tendency.</em>

Many properties of minerals are used to identify them, such as <em>color, density, hardness,</em> among others. In this case, we are talking about their <u>breaking tendency.</u>

<h3 /><h3>How do minerals break?</h3><h3 />
  • Minerals can cleave or fracture.

  • A type of mineral breaks always in the same, and this is why the breaking tendency is useful to identify them.  
<h3 />

<u>- Cleavage</u>

  • The mineral breaks in flat smooth planes.

  • Cleavage direction and smoothness of surfaces are significant when identifying.

<u>- Fracture</u>

  • The mineral break in irregular planes.

  • In these minerals, there is no particular breaking direction.

<h2 /><h3>Examples</h3>

<u>- Cleavage</u>

  • Calcite
  • Mica
  • Muscovite
  • Pyroxene
  • Halite
  • Feldspar
  • Gypsum

<u>- Fracture</u>

  • Quartz
  • Asbestos
  • Limestone
  • Beryl
  • Chromite
  • Agate
  • Copper

You can learn more about fracture and cleavage at

brainly.com/question/22061284

brainly.com/question/2311110

8 0
2 years ago
A wildlife biologist suggests re-introducing the eastern cougar into southern Alabama, reasoning that besides bears, which can s
Anon25 [30]
It is quite possible that introducing a new predator to the food chain may set it off balance. The cougar will flourish in southern Alabama based on the circumstances given above because of the high availability of deer. The introduction of the cougar will decrease the deer population overall. 

Hope this helps in some way!
7 0
2 years ago
Read 2 more answers
A student notices that when bananas are kept near other fruits, the other fruits ripen faster. She wonders what causes the other
Degger [83]

i think it is D, she has already constructed the hypothesis and needs is performing the experiment. there is not much of an observation stage because she is looking at a distant end result in a set time frame.


3 0
3 years ago
Read 2 more answers
Nana has a water purifier that filters \dfrac13 3 1 ​ start fraction, 1, divided by, 3, end fraction of the contaminants each ho
Sophie [7]

Answer:

Your answer is 1/2 times 2/3 to the power of t.

Explanation:

8 0
3 years ago
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One major difference between plant and animal cells is that plant cells are the only ones with
amm1812
They are the only cells with chloroplast 
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3 years ago
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