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prisoha [69]
3 years ago
14

Help please, this is for a test and I would like to double check my answer with someone

Biology
1 answer:
ehidna [41]3 years ago
5 0

Answer:

It would be B

Explanation:

By doing the punnet square, you get BB, BB ,Bb, Bb, of which 50% are heterozygous.

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Answer:

This question is asking to identify the variable in the experimental statement.

The eye chart is the CONTROL VARIABLE

Explanation:

An experiment consists of several variables to look out for in order to achieve any significant result. These variables are independent variables, dependent variables and control variables. Although independent and dependent variables are the major experimental variables, but control variables are also important.

A control variable is the variable that remains constant or unchanged throughout the experiment. Any change to the control variable will affect the dependent and independent variables. In this question, the eye chart is the CONTROL VARIABLE because it remains constant or unchanged. The same eye chart is used for the experiment.

N.B: The distance to the eye chart is the independent variable while the number of letters visible on the line is the dependent variable. Hence, changing the eye chart (control variable) will affect the distance and the number of letters visible.

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True or false: agonal gasps are not normal breathing and may be present in the first minutes after sudden cardiac arrest.
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This statement is true.
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The components of the scientific argument are
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