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3 years ago

Scientific investigations begin by asking questions that can be tested, measured, or both. Which question meets this criterion?

Biology

2 answers:

grin007 [14]3 years ago

5 0

Answer:

B) Do hand sanitizers decrease a person’s risk of a bacterial infection?

Explanation:

Data related to the use of hand sanitizers can be analyzed to understand whether hand sanitizers help decrease bacterial infections.

Y'ALL WELCOME GG ;)

liberstina [14]3 years ago

4 0

The answer choices are not provided, so I cannot select the correct one. However, I may provide you examples and guidance on how to choose the correct one.
As mentioned in the explanation, a scientific question must have a variable that is changed, the independent variable, and a variable on which the effect of the change is measured. This is the dependent variable. Examples of such questions include:

How will the amount of water given to a plant affect its rate of growth?
What will be the amount of sugar that can be dissolved in water at a given temperature?
At what temperature will a balloon filled with air pop?

All of these questions may be tested using experiments.

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Explain how natural selection could lead to a change in allele frequency leading to a change in the color of the frogs.

Pie

Answer:

Due to increasing the survival.

Explanation:

The natural selection causes a change in allele frequency leading to a change in the color of the frogs because the colour of the frog helps it in hiding from predators. The population of that frog specie increases which has the ability to hide from the predators in that environment while on the other hand, the population of frog decreases which can easily be seen by the predator due to its colour so this change in allele frequency will leads to natural selection.

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2 years ago

When the energy needs of the body cannot be met in any other way, the last resort of the body is to ______________________.

antoniya [11.8K]

Answer:

Catabolysis

Explanation:

Catabolysis is the last metabolic resort for the body to keep itself — particularly the nervous system—functional. Protein stores, especially in muscle tissue, provide the amino acids needed for the process.

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2 years ago

Which of the following is NOT true of the cell theory?

Dafna11 [192]

The answer is D.) all cell are composed of a membrane...

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3 years ago

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If you made a Punnett square showing Gregor Mendel’s cross between true-breeding tall plants and true-breeding short plants, the

nekit [7.7K]

Answer:

Explanation:

Assume that allele A is the dominant allele that produces the dominant phenotype (tall) in plants that have at least one allele A, and allele a is the recessive allele that produces the recessive phenotype (short) in plants that have two alleles a.

In the parental generation, a true-breeding tall plant has the AA genotype (phenotype: tall), and a true-breeding short plant has the aa genotype (phenotype: short).

We have the Gregor Mendel's cross as in the image attached here.

All of the F1 generation (offspring plants) have the Aa heterozygous genotype, and therefore, they are all tall.

The answer is c (the offspring plants have a genotype that was different from that of both parents).

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2 years ago

Which term is defined as masses of rock,earth and/or debris that flow downhill.

marshall27 [118]

It would be a landslide.

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2 years ago

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