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Brums [2.3K]
3 years ago
12

Which is a correct guideline of science?

Biology
2 answers:
Nikolay [14]3 years ago
8 0
The correct answer is answer choice b.
uysha [10]3 years ago
3 0

Answer:

B. Explanations are based on observations, evidence, and testing.

Explanation:

The scientific method has five basic steps plus one feedback step:

  • Make a note.
  • Ask a question.
  • Formulate a hypothesis or a testable explanation.
  • Make a prediction based on the hypothesis.
  • Test the forecast.
  • Repeat: Use the results to formulate new hypotheses or predictions.

The scientific method is used in all sciences. Scientists in these fields ask other questions and perform other tests. However, they use the same approach to find the answers that are logical and supported by evidence.

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Explain why a plant that does not get enough nitrate has weak growth
blagie [28]

Answer:

Nitrate deficiency

Explanation:

Plants absorb nitrates in water through their roots. Nitrates are present in high levels in plant fertilisers. Without nitrates, the amount of chlorophyll in leaves reduces. This reduces the plant's ability to photosynthesise and grow properly, which reduces the farmers' crop yield .

5 0
3 years ago
List examples of carbohydrates, lipids, proteins, and nucleic acids and name the function of each
GaryK [48]
Macromolecules are large molecules within your body that serve essential physiological functions<span>. Encompassing </span>carbohydrates<span>, </span>proteins, lipids and nucleic acids<span>, macromolecules exhibit a number of similarities.

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7 0
3 years ago
What is the theory of natural selection, and why does it occur in an organism? Give an example.
BlackZzzverrR [31]

Answer:

It occurs in organisms because an organism with a beneficial trait/mutation have a higher chnace of surviving compared to organisms that do not. So the organsims that do survive pass on their genes to the next generation, and the bext generation will pass on those genes to the generation after and so on. But all the organisms that do not possess a beneficial trait/mutations will not survive, therefore they cannot reproduce and pass on those genes to their offspring. This means that most of the population will posses that trait/mutation.

Example: Spotted moths camouflage with bark so they are seen by predators and eaten. Black moths are easily seen by predators and are eaten. Spotted moths then pass on their genes to the next generation of moths.

5 0
3 years ago
In the above diagram of an animal cell, what is the function of structure 1?
AnnyKZ [126]

Answer:

C

Explanation:

6 0
3 years ago
What is the main function of the cell membrane?
postnew [5]

Answer:

It controls the movement of dissolved substances in and out of the cell.

Explanation:

It is said to be semi-permable

7 0
2 years ago
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