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photoshop1234 [79]
3 years ago
14

A researcher asks an assistant to conduct a study on her behalf. She specifically tells her assistant only to share the results

anonymously and not include the names of the students along with their scores. Such an experiment would be considered a__________-a. double-blind experiment.b. single-blind experiment.c. correlational study.d. laboratory observation.
Biology
1 answer:
Pavel [41]3 years ago
4 0

Answer:

a. double-blind experiment

Explanation:

A double-blind study <em>is done when the participants and experimenters do not know who is receiving which treatment in order to prevent bias.</em> We can conclude this is the correct answer because the results are being shared anonymously.

I hope you find this information useful and interesting! Good luck!

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Explanation:

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3 years ago
Ms. Jones brought this rock to her science class and instructed her students to explain how it was formed, which explanation is
Ahat [919]

A . Leaves were trapped between layers of sediment millions of years ago, causing the imprint

Explanation:

The only true explanation that perfectly describes the rock is that the leaves were trapped between the layers of sediment millions of years ago causing the imprint.

Leaf imprints are often referred to as trace fossils.

  • Trace fossils points to the different life activities an organism must have been engaged in.
  • When a leaf is trapped in a soft sediment between two layers, the compaction of the sediment can duplicate the form of leaf on beds.
  • This gives a physical overview to the nature of leaf.
  • Such an imprint did not grow, and cannot be attributed to metamorphic processes(option D).
  • Option C is completely wrong

Learn more:

Fossil records brainly.com/question/12790206

#learnwithBrainly

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Human blood is composed of all of the following except
Tcecarenko [31]
Interstitial fluid. Hope this help
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In which products are you likely to find gold?
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Two populations of a species of squirrel are geographically isolated from each other. Although they have the same population den
Fudgin [204]

Answer:

C) The smaller population will be more affected than will the larger population, because the smaller population has less genetic variation than the larger population has.

Explanation:

Genetic variations are present in the natural populations. Some of the genetic traits become adaptive under the changed environmental conditions and allow the individuals carrying them to survive and reproduce. In this way, the genetic variations help to maintain a population.

Therefore, a larger population of a squirrel species with more genetic variations will have less intense impacts of a disturbance/natural calamity and/disease. On the other hand, a smaller population of the same species with a lesser number of squirrels has fewer genetic variations. This population is more likely to be affected in a negative way by a disturbance such as pathogen.

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