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sleet_krkn [62]
3 years ago
11

How do these effects on the gene pools lead to speciation

Biology
1 answer:
nataly862011 [7]3 years ago
7 0

Answer:

Over time, genetic changes add up in each population.

These changes may prevent individuals from each population from being able to mate successfully with each other. If this happens, the two populations are considered to be distinct species.

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Kathy was making liquid growth medium for plants. The pH of the original solution was 8. The optimal pH for plant growth is 6. W
liubo4ka [24]

If referring to the question: Kathy was making liquid growth medium for plants. The pH of the original solution was 8. The optimal pH for plant growth is 6. What was the best compound to add to make it pH=6?

A) KOH

B) HCL

C) Water

D) No answer provided

Then the correct answer would be option B, to add HCL, known as Hydrochloric acid to lower the pH to 6.

In science, pH is a scale used to measure the acidity of a solution or its basicity. The scale ranges from 0 to 14. A pH of 7 would mean that the given solution is neutral, lower than 7 equates to an acidic solution, while anything above 7 becomes increasingly basic.

Option A is to add KOH, or potassium hydroxide to the original solution whose starting pH is 8. KOH is a solution whose pH is above 8,  a strong base, and is often used to increase the pH of a solution. In the question it states what the desired pH is 6, therefore we want to lower, not increase the pH. This makes option A incorrect.

Water is a neutral solution. Even though it is neutral, it is not used to neutralize basic or acidic solutions. Acid or bases may be added to water to create very diluted solutions that are nearly neutral despite containing a strong base or acid, but this is a different process than neutralization and will not give the desired pH. Option C is also wrong.

Option B is correct because HCL, known as hydrochloric acid is a strong acid, commonly used to lower the pH of a solution by increasing the concentration of hydrogen ions. Since we start with a pH of 8 and wish to achieve a pH of 6, HCL is the correct component to add to the solution. Due to option B being correct, option D that states that no answer is provided, is incorrect.

For more on pH visit:

brainly.com/question/491373?referrer=searchResults

8 0
3 years ago
What is a dramatic environmental event?
Vsevolod [243]

An example of an dramatic environmental event can be deforestation, or it can be animals losing their homes.

4 0
3 years ago
What must scientists look for in their experiment or their data to make sure it is accurate? A. Sources of error B. Observations
gtnhenbr [62]

Answer:

A SOURCE OF ERROR BECAUSE IFTHERE ARE  MISTAKES THEN THE INFO ISNT ACCURATE

Explanation:

MARK BRAINLEST PLEASE

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What is the meaning of matter
Gala2k [10]
Matter is anything that has mass and occupies space. There are three different states of matter- solid, liquid, and gas.
7 0
3 years ago
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Which of the following is a secondary color?<br> A. blue <br> B. orange <br> C. red <br> D. yellow
Grace [21]
Orange i hope this helps you
4 0
3 years ago
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