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madreJ [45]
3 years ago
12

A scientist studying the star Alpha Centauri would probably rely on _____ to gather data. A. the Internet B. encyclopedia articl

es C. laboratory experiments D. descriptive investigations
Biology
1 answer:
jeka57 [31]3 years ago
4 0

D. descriptive investigations

Explanation:

A scientist studying the star Alpha Centauri would probably rely on descriptive investigation to gather data.

In descriptive investigation, experiments cannot be performed since the subjects cannot easily be manipulated or they are far too inaccessible. This form of investigation is based on indirect qualitative investigation of a phenomenon.

  • Alpha Centauri is a distant star several light years away from the vicinity of the scientist.
  • The best way to investigate this distance body is to make inferences from the evidence gathered from observatory stations using telescopes.
  • Astronomers can collect different information and give vivid description of the distant start.
  • It is highly impossible to make comparisons and alter variable in this kind of investigation.

learn more:

experiment brainly.com/question/5096428

#learnwithBrainly

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Who devised a technique for determining the blood group of a dried bloodstain, which he applied to criminal investigations?.
Dominik [7]

Landsteiner Bertillon devised a technique for determining the blood group of a dried bloodstain, which he applied to criminal investigations.

<h3>What about blood group?</h3>
  • According to the presence or absence of antibodies and hereditary antigenic compounds on the surface of red blood cells, blood is classified according to its type.
  • Depending on the blood group system, these antigens could be proteins, carbohydrates, glycoproteins, or glycolipids.
  • The genes that a person got from their parents determine what blood type they have.
  • There are numerous systems for classifying blood types, but ABO is the most popular one.
  • The ABO group is divided into four main categories: A, B, O, and AB.
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Learn more about blood group here:

brainly.com/question/15289194

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