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Aleksandr [31]
3 years ago
10

Help The rule for controls is that _____.

Biology
2 answers:
Viktor [21]3 years ago
5 0
I think the answer is B
Natalija [7]3 years ago
4 0

Answer:

B. everything should remain the same between experimental groups

Explanation:

The control group, in one experiment, is characterized by individuals who will not receive the factor being tested in the experiment, but will also be evaluated at the same time points as the subjects in the intervention group. For example, if you have bean plants and want to do an experiment where you will evaluate the effectiveness of a fertilizer on bean plants, you will apply fertilizer on 9 bean plants while one plant will be maintained without fertilizing it. However all plants will be treated the same (except for fertilizer application) and will be evaluated in the same way. The fertilizer is the factor that is being tested in the experiment, the plant that did not receive it is the control group.

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What are ancestral character traits?
Levart [38]

Answer:

C. Traits present in the last common ancestor of a certain group of species under consideration.

Explanation:

Ancestral character traits are the one that is present in the last common ancestor and all of its descendant groups. For example, the presence of the vertebral column is an ancestral trait for all the vertebrate groups such as birds and mammals as it was present in their last common ancestor and is also shared by them.

3 0
3 years ago
16. the process of making an inference,
Dmitriy789 [7]

Answer:

The  process of making an inference,  an interpretation based on observation

and prior knowledge is termed as <u><em>inferring.</em></u>

Explanation:

Inference is one of the steps for scientific researches to occur. In simple words, an inference can be described as the logical interpretation of data based on past observations and knowledge. Any observation looked by a scientist follows the phase of inference where the scientists use prior knowledge for inferring his observation. Based on the inference, a possible hypothesis can be devised and formulated. A hypothesis usually arises from prior inferences.

5 0
3 years ago
Salmon live in both fresh water and salt water during their lives. They are born in in fresh water but migrate out to marine wat
zalisa [80]

Answer: The question is incomplete because the options are not given. Here are the options gotten from another website.

A. adaptation

B. reproduction and development

C. response to the environment D. energy transformation

E. maintaining homeostasis

The correct option is maintain homeostasis which is C.

Explanation:

This is because salmon posseses adaptive physical characteristics that help it to suitably live both in freshwater and salt water. This is because homeostasis is the ability to resist any change in order to maintain body internal environment and this is a negative loop feedback. Organs of salmon work to control homeostasis but endocrine and nervous system engage more in maintain homeostasis.

7 0
3 years ago
Why is it important for scientists to share results with others working in their field?
kap26 [50]
When they compare they can see the difference and similarities to get to the end result
5 0
4 years ago
Is an example of excretion peeing? and is an example of egestion pooping?<br><br>​
natima [27]

Answer:

yes and yes

Explanation:

that is correct

5 0
3 years ago
Read 2 more answers
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