Q3. (a) some research has shown that increased use of computers and other digital media can affect
eyesight and reaction times.
a scientist wanted to test if prolonged use of a computer affected reaction time.
the scientist tested the reaction times of 10 people under the same environmental conditions.
these people then used a computer for three hours.
the scientist tested their reaction time again.
give three ways that the scientist could improve this method to determine if prolonged use of a
computer affects reaction time.

What word is used to describe differences of individual organisms

Awoman whose sister tested positive for a specific mutation in the brca1 gene, which increases the risk for breast and ovarian cancer, is found not to have that mutation but does have a mutation of unknown significance near the known mutation site. how should this woman be counseled? select one: a. she should be informed that her risk for breast cancer is greater than the general population but not as great as her sister’s risk. b. she should be informed that because she does not have the mutation, her risk for breast cancer is not greater than that of the general population. c. she should be informed of her gene mutation status and be presented with all the available prophylaxis options and reconstruction options. d. she should be informed that she does not have the specific mutation but that because another mutation is present she should be vigilant about screening

Match the description of each organism to the appropriate category