Answer:
a. longitudinal
Explanation:
A longitudinal study examines a given group over a long period of time, so collecting data from the same group of 30 people over their lifetime certainly fits that definition. It's more like an evolution study.
A cross-sectional compares different groups at the same point in time. So, it's more like a survey.
A microgenetic is much focused in time, providing multiple data sets in a short time to examine rapid evolution of a subject.
An experimental study design will make interactions and experiments with the study group, while this is not the case here apparently, and experimental is usually for a much shorter period than a generation.
Good climate, many rivers, fertile soil
Answer:
because he help us predict how a brain and it's winter my brain or how far the sea level will rise due to warmer temperature
Answer: As the demand for a certain type of jobs increase, the amount of people who are willing to supply their labor also increased.
Explanation:
Hope this helped!!
