1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Masja [62]
3 years ago
11

How can a scientist test a hypothesis if it is not possible to do a controlled experiment.

Biology
1 answer:
serious [3.7K]3 years ago
3 0

Answer:

In an experiment, the researcher needs to have a control group with an experimental group where both groups are identical in every way except that the controlled group does not gets the experimental treatment.

Sometimes, it is not possible to do a test or the experiment utilizing a controlled trial (due to ethical reasons or no practical method available). All things considered, a researcher may test a theory by making predictions about outcomes or patterns that ought to be found in nature if the hypothesis is right.

You might be interested in
Which disorder is a less severe but chronic form of depression?
choli [55]

Answer:

Persistent depressive disorder.

Persistent depressive disorder, known as dysthymia or low-grade depression, is less severe than major depression but more chronic. It occurs twice as often in women as in men. Persistent depressive disorder (PDD) is a serious and disabling disorder that shares many symptoms with other forms of clinical depression.

4 0
2 years ago
List at least 3 different biotic (living/products of organisms) limiting factors and at least 3 different abiotic (nonliving) li
Hunter-Best [27]

Answer:

If your question is referring to the factors limiting the growth and development of the species of deer,

Biotic:

1) Food sources like Grass

2) Predators like Wolf

3) parasites like leaches

Abiotic:

1)Temperature

2)Water

3) Pollutants in environment.

4 0
3 years ago
One form of chromatin modification is acetylation, which is known to occur on positively charged histone tail amino acids, thus
Naya [18.7K]

Answer:

A. The tails do not interact with the DNA

Explanation:

The acetylation refers to the transfer of the acetyl group from Acetyl-CoA to the N-terminal of the histone protein.

Lysine residues (positively charged amino acid) are present at the end of the N-terminal of the histone protein which is neutralized by the acetyl group.

This loses the compaction between the positively charged histone and the negatively charged DNA and the DNA becomes more relaxed. This relaxed state allows the transcription factors to easily bind the DNA and therefore the DNA becomes transcriptionally active.

Thus, Option-A is correct

4 0
3 years ago
Why are shadows longer in the morning and evening?
Luden [163]

Answer:

Shadows are longest in the early morning and late afternoon/early evening when the sun appears low in the sky. As the Earth rotates on its axis, the sun hits each location in the morning at an angle. ... As Earth continues to spin toward sunset, the increasing angle causes shadows to lengthen!

Explanation:

Hope this helps! Have a good day!.....or not...its up to you- <3

4 0
3 years ago
How are crocodiles and birds similar
Sauron [17]

Answer:

Both have dinosaurs as ancestors (basically both are related to dinosaurs)

Explanation:

8 0
3 years ago
Other questions:
  • Exam
    10·1 answer
  • Name the organelle where protein synthesis takes place; found free in the cytoplasm or attached to Endoplasmic reticulum
    9·1 answer
  • The cell cycle
    12·1 answer
  • 4. Predict the photosynthetic pathway that might be used by a saguaro cactus.
    14·1 answer
  • Why does a flap in your throat close when you swallow
    11·1 answer
  • During the ______ _________ of an action potential, voltage-gated potassium channels are open and the voltage-gated sodium chann
    13·1 answer
  • __________ helps prevent adversary action through the presentation of a credible threat of counteraction. It stems from the beli
    7·1 answer
  • What causes the arrows to move in this direction?
    12·2 answers
  • Use what you know about the number of faces, vertices, and edges in polyhedrons to choose True or False for each statement.
    15·1 answer
  • Which of the following are part of the central nervous system?​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!