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alekssr [168]
3 years ago
5

What is a "first quarter" when talking about phases of the Moon? • a fully lit Moon •half of the Moon illuminated •1/4 of the Mo

on is light •a dark Moon​
Biology
1 answer:
Natalka [10]3 years ago
7 0

Answer:

half of the moon illuminated

Explanation:

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A substance that releases Hydroxyl Ions in water is called a Base
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Explain the roles of and relationships among producers, consumers, and decomposers in the process of energy transfer in a food w
insens350 [35]

A producer is like grass, then consumers like a zebra will eat the grass, and wen the zebra dies its body breaks down and helps more grass grow. That cycle keeps going over and over, it never ends.

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When testing diffusion over a selectively permeable membrane, you placed different liquids into special containers. The proper s
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When testing diffusion over a selectively permeable membrane, the proper setup is aimed at putting different concentrations into tubes and the same water volume.

<h3>What is a selectively permeable membrane?</h3>

A selectively permeable membrane is a physical barrier that allows the passage of certain substances but not others.

The cell membrane is a  selectively permeable membrane that cells need to interchange nutrients and waste with their environment.

In conclusion, a suitable experiment to show the process of diffusion in a selectively permeable membrane is to put concentrations of the solute into tubes and the same volume of solvent (water).

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5 0
2 years ago
What happens to a potassium atoms electrons when it becomes an ion?
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The alkali metals in group l of the periodic table all have a single electron in the outermost shell. These metals form covalent bonds with for example the halogens, which have 7 electrons in their outer shell.
When the alkali metal halide, such as KCl is dissolved in water, it dissociates into ions. The K atom loses the single electron, and therefore has a positive charge. In turn, the chloride atom gains the electron and becomes the negatively charged chloride ion.
6 0
3 years ago
Compare how people are affected by an Air Quality Index of 140 with how they would be affected by an Air Quality Index of 170.
AfilCa [17]

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The higher the AQI value, the greater the level of air pollution and the greater the health concern. For example, an AQI value of 50 or below represents good air quality, while an AQI value over 300 represents hazardous air quality.

Explanation:

#need any queshtions answered emidiatly- text me and I got you on pro mo speed

_we all have those times where we need those answers right away.

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