A(n)_____________ is an investigation in which a group that receives some experimental treatment is compared to a group that does not receive the experimental treatment.

Filling up the blanks in the question

1. Radar is used to locate and track storms
2. Meteorology is the study of the atmosphere which includes weather forecasting
3. Meteorologists observe clouds

Meteorology is a branch of atmospheric sciences that majors in the study of the atmospheric phenomenon ( i.e. weather and climate conditions ) of a geographical region.

Meteorology deals mostly with weather forecasting and the study of the clouds. Weather forecasting is very important in every geographic region because that way residents can be  warned of an impending severe weather condition.

Hence we can conclude that the missing terms in your question are : Radar, meteorology and clouds

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Answer:

Radar

Meteorology

Clouds

Explanation:

The ocean that remain frozen accept for part of the year when the edge melt is : ( D ) Arctic Ocean

The Arctic ocean

The arctic ocean stays frozen most times of the year until when the edge of the ocean melts. the artic ocean keeps the polar region of the earth cool and it  remains frozen for up to 8 months of the year.

Hence we can conclude that the Ocean that remain frozen for most part of the year is Artic ocean.

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Answer:

the answer is arctic

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Answer:

D.

Explanation:

1 .Climate change; it is  the significant, long-term changes in the global climate.

2. The global climate is the connected system of sun, earth and oceans, wind, rain and snow, forests, and savannas, etc  and everything by with people deals.

3. Climate change have  harmful effect on human health like; heatstroke and heat-related illnesses , schistosomiasis and many other.

4. Climate change is the big issue these days which have many harmful effects on human life.