Descriptive investigations involve collecting data about a system, but not making tests or experiments.
Making tests belongs to experimental investigations.
Descriptive investigations aim to draw conclusions from observations of the fenomena, while experimental investigations design tests that let the researcher to compare results on different conditions with a control situation.
There is also the so called comparative investigations which collect data from under different conditions but do not include the control situtation.
Answer:
um.. have you thought about google and what dont you get
Explanation:
Around 6.6% is the answer
Answer:
July 10, 1954
On July 10, 1954, President Dwight Eisenhower signed the Agricultural Trade Development and Assistance Act of 1954, Public Law 480, creating the program which became known as Food for Peace.
Explanation:
