Dr. Edward is testing the same individuals repeatedly over time as part of a research study, while Dr. Janice is comparing the performance of different people of various ages at the same time. Dr. Edward is using a research design; Dr. Janice is using a design.

Longitudinal and cross sectional

Explanation:

Dr. Edward is testing the same individuals repeatedly over time as part of a research study, while Dr. Janice is comparing the performance of different people of various ages at the same time. Dr. Edward is using a LONGITUDINAL research design; Dr. Janice is using a CROSS SECTIONAL design.

Dr. Edward is using a longitudinal research design.

Dr. Janice is using a cross-sectional research design.

Explanation:

A longitudinal study also known as longitudinal research design is a type of study in which repeated observations are made on a particular set of variables (e.g. same individuals) over a long or short period of time.

On the other hand, a cross-sectional study also known as cross-sectional research design is a type of study in which observations are made on different variables (e.g. different people) at the same time.

c. taught scientists many new things about the earth, but not other planets.

explanation:

abolish

do away with

unanimous

in complete agreement

secede

separate; break free

inauguration

starting a new position with a formal ceremony.

cooperationist

people who wanted the north to cooperate with the south

surrender

to give up

volunteer

perform a service for free

draft

involuntary service in military

retreat

withdraw; move away from enemy

advisor

expert who gives advice

explanation: