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ElenaW [278]
4 years ago
13

What is thought to have caused the ice age

Biology
2 answers:
Nostrana [21]4 years ago
8 0

Answer:

It is believed that the ice age was caused by fluctuations in the amount of solar energy received by the planet in some periods of time.

Explanation:

Ice age is the name given to the period when thick layers of ice cover large areas of the Earth. These periods can last for thousands of years and dramatically change the characteristics of the planet. There have been some very significant ice ages in the history of the planet. At the end of the 19th century, much research showed that there were several ice ages, alternating with interglacial periods. The interglacial period or interglacial phase is characterized by warmer average temperatures and consequent thawing of the glaciers, while the ice ages are periods of very cold, where the temperature of the Earth is very low causing the increase of the glaciers. It is believed that the ice age was caused by fluctuations in the amount of solar energy received by the planet in some periods of time.

Semenov [28]4 years ago
7 0

Answer:

Ice Age Explanation. Fluctuations in the amount of insolation (incoming solar radiation) are the most likely cause of large-scale changes in Earth's climate during the Quaternary. In other words, variations in the intensity and timing of heat from the sun are the most likely cause of the glacial/interglacial cycles.

Explanation:

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Answer:

Control group: volunteer stationary bike riders in a pollution-free chamber

Experimental group: volunteer stationary bike riders in a chamber filled with air pollutants common to Los Angeles

Independent variable: exposure to air pollution

Dependent variable: The heart rates (physical fitness) of the volunteer riders.

Explanation:

In a scientific experiment, data is compared between the control group and experimental group to ascertain the effect of the independent variable on the dependent variable. A control group is the group in an experiment that is not treated with the independent variable i.e. the independent variable is controlled while the experimental group is the group that is treated with an independent variable.

N.B: The independent variable is the variable controlled by the experimenter in order to influence the dependent variable (measurable outcome).

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The control group in this experiment is the volunteer riders placed in a POLLUTION-FREE CHAMBER where the independent variable cannot influence or have any effect on the measurable variable (dependent). The experimental group is the volunteer riders placed in a CHAMBER FILLED WITH AIR POLLUTANTS. The independent variable (air pollution) has been changed in the experimental group.

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4 years ago
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