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Neporo4naja [7]
3 years ago
6

Day 2

Biology
1 answer:
castortr0y [4]3 years ago
6 0

Answer:B

Explanation:The scientist changed the variable

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In your textbook, read about nucleotides.
lisabon 2012 [21]

Answer:

1. phosphate

2.sugar

3.purin bases

4.guanine

5.pyrimidine

6.cytosine

7 0
3 years ago
The table below shows the depths at which an index fossil and three other fossils were found.
disa [49]

Answer:

Fossil B is the same age as the index fossil.

Explanation:

TOO LATE BUSTER

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3 years ago
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Do you think you would like to analyze dna samples? why or why not?
dimaraw [331]
No, its not my field of interest.

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4 years ago
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Please help with my bio
mr Goodwill [35]

It should be the first one(glycolysis)

6 0
4 years ago
The pH is a measure of the concentration of the hydrogen ion (H+) in water. Highly acidic water has a very high H+ concentration
LUCKY_DIMON [66]

The hydrogen ion concentration of the following pH samples is as follows:

  • 7 (a neutral solution) = 0.845
  • 5.6 (unpolluted rainwater) = 0.748
  • 3.7 (first acid rain sample in North America) = 0.568

<h3>How to calculate hydrogen ion concentration (H+)?</h3>

The pH is a measure of the concentration of the hydrogen ion (H+) in water. This means that a relationship exists between H+ and pH of a solution.

The mathematical relationship between pH and H+ concentration ([H+]) is as follows:

pH = –log [H+]

This means that the hydrogen ion concentration (H+) of the following pH values can be calculated thus:

  • log 7 (a neutral solution) = 0.845
  • log 5.6 (unpolluted rainwater) = 0.748
  • log 3.7 (first acid rain sample in North America) = 0.568

Learn more about pH at: brainly.com/question/15289741

#SPJ1

3 0
2 years ago
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