It helped increase population. Before agriculture, people roamed around and
gathered what they could to survive.
Later on, they learned how to grow their plants and raise their own
livestock, they decided to settle down.
This led to the growth of communities and the start of civilization.
Bird and egg drop experiment are similar in nature. When the birds fly and have wings they slow down when they are landing.
C. Is the answer
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Answer:Validity
Explanation:
Validity is measure of how valid the research is which means it gives solid relevant result which were initially intended. It is a test of how valid both your design and method of the research is.
There are various factors that can affect validity of the research.
There are internal factors that can affect validity of the research those are the ones that occur within the study such as failure to monitor vital variables of the study or using the inaccurate instrument to gather the needed data.
Below are the factors that has an impact on internal validity.
-size of the studied population
-instruments used
-history
-subject variability
-available time to gather data
- attrition
External validity are affected by the external factors such as the place where you conduct your research which may restrict the ability to obtain actual results . It can also be affected by the things like not being able to balance your subjects for example focusing on one gender and race eventhough your research is about all the types of people at large.
Crucial factors that affects external validity.
- The effect of time
- method use to collect data
- characteristics of the chosen population
- experiment effect
- interaction of subject selection
Answer: Malaria
Explanation: About every 30 seconds in Africa 3,000 kids die everyday
