Answer:
0.625
Explanation:
The slope (m) of a linear regression line is ...

Then we have ...

The value of the correlation coefficient is 0.625.
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B pollen tube i remember this question only cause my teacher had created a quiz let which i studied <span />
Answer:
Due to change in genetic combination.
Explanation:
The results change as the number of trials increased because variation occur in the genetic combinations of chickens. It is important to breed the chickens repeatedly in this experiment in order to gain accuracy and attain best results. If the chicken is breed repeatedly, at the beginning changes occur in their offspring due to change in their genetic makeup so for accurate results repetition is necessary.
Answer:
Enzymes catalyze specific reactions.
Explanation:
Enzymes are known as both biological catalysts and proteins. It is a substance that acts as a biological catalyst in an organism. The biological processes are chemical reactions, most are regulated by the help of enzymes that occur within all living organisms.
Enzymes are the highly selective catalyst in nature means each enzyme only helps to speed up a specific reaction. Catalysts help to lower the activation energy for reactions. So, if lower the activation energy for a reaction, the faster the rate of reaction.