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agasfer [191]
3 years ago
6

HELP!!! WITH IN 5-7 MINUTES PLEASE

Biology
2 answers:
Slav-nsk [51]3 years ago
8 0

Answer:

B. Convergent and subduction zones can cause trenches

Explanation:

WINSTONCH [101]3 years ago
6 0

I think the answer is A.

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Calculate the ratio of H+ ions to OH– ions at a pH = 7. Find the concentration of H+ ions to OH– ions listed in Table B of your
EastWind [94]

Answer:

1:1

Explanation:

What is the concentration of H+ ions at a pH = 7?

⇒ 0.0000001 mol/L  

What is the concentration of OH– ions at a pH = 7?

⇒ 0.0000001 mol/L  

What is the ratio of H+ ions to OH– ions at a pH = 7?  

1 :1

4 0
3 years ago
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Hope this helps!

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Which of the following statements about PCR is/are FALSE? There may be more than one correct answer.
Harrizon [31]

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In scientific investigations, how does empirical evidence help scientists devise hypotheses?
nika2105 [10]

Answer:

Explanation:

An empirical evidence illustrates facts that are drawn from experimentation and observations. These are usually drawn from the way we see and percieve our environment using our senses.

A hypothesis is best and simply defined as a scientific guess. It is often a direct product of empirical studies of a particular problem. Most times when scientists gather facts and principles have been formulated, they try to explain their observation. This explanation is the hypothesis. The satement of the hypothesis is usually tentantive. Sometimes, we can have several hypothesis for a common source of empirical evidence.

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