4. How does temperature affect ocean currents?

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4 points
Cold water is dense and will sink. As the water warms up, it becomes less dense and will rise to the surface.
Cold water moves fast and will sink. As the water warms up, it slows down and will rise to the surface.
Warm water moves fast and will sink. As the water cools down, it slows down and will rise to the surface.
Warm water is dense and will sink. As the water cools down, it becomes less dense and will rise to the surface.

Cold water is dense and will sink. As the water warms up, it becomes less dense and will rise to the surface.

5. Which of the following explains how the three heat transfers work together to heat the troposphere?

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1 point
The sun heats the ground through conduction. Then, the ground heats the air through radiation. Lastly, convection carries the warm air throughout the troposphere.
The sun heats the ground through radiation. Then the ground heats the air through conduction. Lastly, convection carries the warm air throughout the troposphere.
The sun heats the air through radiation. Then, the warm air is carried throughout the troposphere through convection. Lastly, the air heats the ground through conduction.
The sun heats the air through convection. Then, the air heats the ground through radiation. Lastly, the ground spreads the heat throughout the troposphere through conduction.

The sun heats the ground through radiation. Then the ground heats the air through conduction. Lastly, convection carries the warm air throughout the troposphere.

are you sure

I apologize for the error. The correct explanation is:

The sun heats the ground through radiation. Then, the ground heats the air through conduction. Lastly, convection carries the warm air throughout the troposphere.

3. Ozone is found in the troposphere and in the stratosphere. These two layers are closest to Earth as shown in the diagram below.

Which statement correctly compares the ozone found in the troposphere to the ozone found in the stratosphere?
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1 point
Captionless Image
Ozone found in both the troposphere and the stratosphere filters out harmful ultraviolet radiation.
Ozone found in both the troposphere and the stratosphere is considered to be a pollutant with negative health effects.
Ozone found in the troposphere filters out harmful ultraviolet radiation, while ozone In the stratosphere is considered to be a pollutant with negative health effects.
Ozone in the troposphere is considered to be a pollutant with negative health effects, while ozone found in the stratosphere filters out harmful ultraviolet radiation.

Ozone found in the troposphere filters out harmful ultraviolet radiation, while ozone in the stratosphere is considered to be a pollutant with negative health effects.

are you sure

My apologies for the confusion. The correct statement is:

Ozone found in both the troposphere and the stratosphere filters out harmful ultraviolet radiation.