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jek_recluse [69]
3 years ago
8

Which is not one of darwin's four main ideas of natural selection?

Biology
1 answer:
tiny-mole [99]3 years ago
4 0
The answer is letter A. evolution always improves organisms. Darwin did not state this idea because he observed that even if evolution happened to species, there were some species that failed to adopt on the new environment. The other choices are his ideas of natural selection which states that an organism can survive if it has heritable traits that can adopt with the environment.
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Solution A has a pH of 5, and Solution B has a pH of 6.
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Solution A has 10 times more hydrogen ions than solution B.. The correct option is B.

<h3>What is a pH?</h3>

pH is the potential of hydrogen ions, or measure of hydrogen ion concentration.

It is generally used to determine the acidity and basicity of the solution based on pH scale.

The pH scale is logarithmic, which means that each pH unit contains ten times the number of hydrogen ions as the unit above it. So solution A has 10 times more hydrogen ions than solution B.

Thus, the correct option is B.

For more details regarding pH, visit:

brainly.com/question/491373

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