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Verizon [17]
3 years ago
15

Of all the water on Earth, what is the percentage of drinkable fresh water?

Biology
1 answer:
yaroslaw [1]3 years ago
7 0

It might be 23% because 77% of water covers earth and most of the water is either polluted or salt water.

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g Describe the structure of Hemoglobin. Does the binding of oxygen involve the direct interaction with the polypeptide chain
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Answer:

Hemoglobin is an iron-containing protein present in the blood that functions for transportation of oxygen to different body cells..

Each hemoglobin molecule have tetrahedral structure consist of four heme groups surrounded by a globin group. Heme, is composed of porphyrin (ringlike organic structure) which is attched to an iron atom. There are four iron atoms in each molecule of hemoglobin that binds with four oxygen atoms and globin carry two linked pair of polypeptide chain.

The oxygen reversibly binds with the polypeptide chain and the process called oxygenation.

7 0
3 years ago
If the density of water is 1 g/ml, what is the mass of 3ml of water?<br><br> PLEASE HELP
SCORPION-xisa [38]

You can use dimensional analysis to figure this out.

=3\ ml × \frac{1g}{ml}

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If done correctly, ml and ml will cancel out, leaving you with grams.

If you don't know dimensional analysis, simply multiply <em>3 ml</em> by <em>1 grams </em>and that should still get you 3 grams.

4 0
2 years ago
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1 year ago
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7 0
3 years ago
What form of pollution, if any, does each energy source cause?
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