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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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Arrange the tiles to show the sequence of the steps in a scientific investigation,
Otrada [13]

Answer:

correct sequence:

make an observation

ask questions

construct a hypothesis

test the hypothesis

analyze the results and make conclusions

communicate the results

Explanation:

Scientific method is a set of steps made in order to perform a proper and valid scientific investigation.

Everything starts with an observation, finding something unusual or interesting that we want to test. After choosing our field of interest, we continue to ask a question; why is something the way it is and what is the reason for that?

Every question needs an answer so we propose a possible answer or a hypothesis. Of course, this doesn't have to be correct or final explanation, but it will be the answer which will we put to the test.

After constructing a hypothesis, we need to test it through researching or experimenting in which we will obtain some date.

Results of our experiment in the form of data must be analyzed and used to confirm or denied.

These results, whatever they may be, will help us to make a conclusion which we'll finally communicate, showing it to the other researchers.

5 0
3 years ago
Xenotransplantation is using nonhuman animal organs in transplantation. Many people are against this practice. What would be the
mart [117]
One of the common arguments why the process of transplanting non-human organs which came from animals may be considered as an ethical act is that antigens on the surface of the non-human organs are not significantly rejected in the process. Although its research is still substantial, it is still considered as a matter of ethical issue.
7 0
3 years ago
Question is in the picture below
spayn [35]

The measurements that are normal for a client is a blood pressure of 108/80, a pulse of 112 beats per minute and respiratory rate of 15 breaths per minute. Option C

<h3>What is the normal blood pressure?</h3>

The blood pressure refers to the rate at which the heart pumps blood to the other parts of the body. The blood pressure would rise if the blood vessels are blocked and the heart would have to do more work to pump blood.

The measurements that are normal for a client is a blood pressure of 108/80, a pulse of 112 beats per minute and respiratory rate of 15 breaths per minute.

Learn more about blood pressure:brainly.com/question/12497098

#SPJ1

7 0
2 years ago
1. Get a flashlight and switch it on.
Anna [14]

Answer:

Explanation:

1. The beam emitted travels along a straight path and it is divergent in nature. It has its radius increasing progressively as the distance away from the source of light increases.

2. It would be observed that the region where the bulb is positioned has denser light beam. This gets fainter towards the edges of the beam and away from the bulb.

8 0
3 years ago
Question 21
Lelu [443]
Produce their own food
3 0
3 years ago
Read 2 more answers
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