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xxTIMURxx [149]
4 years ago
5

What gives the gem amethyst is purplish color?

Biology
1 answer:
velikii [3]4 years ago
4 0
Gem amethyst turns purple because of the irradiation with iron. Answer is Iron.
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What is a common ancestor?
Aleksandr [31]

C. Common Ancestors are the animals that we evolved from

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3 years ago
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Which of the following is NOT found in the cell membrane:
Tatiana [17]

Answer:

nucleic acid are not found in the the cell membrane.

Explanation:

They are only found in ribosomes and the nucleus as either DNA or RNA

6 0
3 years ago
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¿Que aspecto debemos considerar para desidir el uso mas adecuado de lagunos materiales en la satisfacción de necesidades humanas
umka21 [38]

Answer:

El efecto del material sobre el medio ambiente es el aspecto a considerar.

Explicación:

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3 0
3 years ago
If the grass contains 100,000 kcal of energy,how much energy will a fox obtain from eating a bird?
Karo-lina-s [1.5K]

Answer:

1,000 kcal

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As a general rule, every trophic level only gains 10% of the energy from the trophic level.

So, the grass has 100,000 kcal of energy.  Assuming the bird eats grass, it only gets 10,000 kcal of energy.  Assuming the fox eats the bird, it only gains 1,000 kcal of energy.

3 0
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Pulmonary arteries transport ________.
andrezito [222]

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B

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3 0
3 years ago
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