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Leona [35]
3 years ago
13

Atmospheric oxygen gas is a pure substance

Biology
1 answer:
san4es73 [151]3 years ago
7 0
O2 is just elemental oxygen. It's a pure substance, but not necessarily because it only contains oxygen atoms, it's because there's only oxygen molecules present.
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HELP ME !!!!HELP ME PLEASE
postnew [5]

Answer:

Abiotic is basically a non living factor so the answer is

D. Sunlight, temperature , conductivity, dissolved oxygen.

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3 0
2 years ago
A common concern for beer brewers making sour beers is contamination from Acetobacter. This organism converts ethanol to acetic
wolverine [178]

Answer:

C. Ethanol, ammonium chloride, phosphate buffer, magnesium sulfate, calcium chloride, trace elements

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3 years ago
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5 0
3 years ago
Before mitosis begins, what happens during S-phase?
Blababa [14]
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Before meiosis begins, during S phase of the cell cycle, the DNA of each chromosome is replicated so that it consists of two identical sister chromatids, which remain held together through sister chromatid cohesion. This S-phase can be referred to as "premeiotic S-phase" or "meiotic S-phase".
8 0
2 years ago
how would the second row of values in the plant experiment most likely compare to the second row of values in the original exper
timurjin [86]

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Explanation:

The procedure by which living things convert oxygen and glucose to water and carbon, accordingly yielding vitality is called photosynthesis. It does not require the nearness of daylight and is continually happening in living life forms. Cell breath occurs in the mitochondria of cells.  

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4 0
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