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Nezavi [6.7K]
3 years ago
8

Which statement is true?

Biology
1 answer:
Liono4ka [1.6K]3 years ago
3 0

Answer:

The statement which is true is as follow:

d. Two hairs from the same head may not have the same morphological characteristics.

Explanation:

  • The statement in option a is not correct as we can't always determine the racial origin of hair.
  • The statement in option b is not correct as it is not possible to do through trace elemental composition.
  • The statement in option c is not correct as hair is not examined to determine the sex because the Shettles Method is uses to determine the sex of a baby.
  • The statement d is correct as the hair have different structural features like length which makes its morphological characteristics.
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Four groups of students plan scientific investigations to answer four questions for the science fair. Which question would most
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Answer:

The question is incomplete, the questions asked by the students were as follows:

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The answer is 3

Explanation:

Three types of investigation are used by scientists to solve a problem or answer a question. These questions are: comparative investigation, descriptive investigation and experimental investigation. Experimental investigations are conducted to test the relationship between two variables. In the test, one of the variable is manipulated (independent variable) while the other responds (dependent variable).

In this case involving questions asked for a science fair, HOW DIFFERENT TYPES OF GRASS AFFECT BALL ROLLS is most likely an experimental investigation because it is testing the effects of grass type (independent variable) on ball roll (dependent variable).

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What can be said about the leading versus the lagging strand in dna population?
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2 years ago
When neurons "fire," the first thing that happens is that sodium ions enter the cell. this does not require an input of energy.
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from the smallest units of life to the largest units of the environment :

organelles >>> cells >>> tissues >>> organs >>> organ systems >>> organisms >>> populations >>> communities >>> ecosystems >>> biosphere

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