Why is it harder to breathe when climbing up a high mountain?
A. The air has more moisture.
B. The air pressure increases.
C. The air compresses the lungs.
D. The air is thinner.
D. The air is thinner.
At higher altitudes, the air pressure decreases and there is less oxygen available per unit volume of air. This decrease in oxygen can make it harder for the lungs to take in enough oxygen, resulting in difficulty breathing, especially during physical exertion like climbing a mountain.
C. Meteors burn up in this layer to create shooting stars.
The mesosphere is the third layer of the Earth's atmosphere, located above the stratosphere and below the thermosphere. In the mesosphere, meteors burn up due to friction with the atmosphere, creating shooting stars.
B. a diagram illustrating how plants use carbon dioxide, water, and sunlight to produce food and oxygen gas
This evidence best supports the claim by showing how living organisms, such as plants, rely on the unique mixture of gases like carbon dioxide and oxygen to carry out essential processes like photosynthesis. This demonstrates how the cycling of gases plays a crucial role in supporting life on Earth.
Which statement correctly describes the mesosphere?
A. The Northern Lights are visible in this layer.
B. Atmospheric changes in this layer cause weather at Earth's surface.
C. Meteors burn up in this layer to create shooting stars.
D. Commercial airplanes fly through this layer
A student is examining scientific evidence to support the following claim.
"Life is possible because of the unique mixture of gases that cycle through the Earth's spheres."
Which evidence best supports the claim?
A. an illustration demonstrating how the depletion of the ozone layer is not blocking out the sun's ultraviolet rays
B. a diagram illustrating how plants use carbon dioxide, water, and sunlight to produce food and oxygen gas
C. a photograph capturing a nighttime meteor shower
D. a timeline detailing when and erupting volcano releases lava, ash, and gases
Which question can best be answered by studying a diagram of the carbon cycle?
A. How are fossil fuels formed from the decay of dead plants and animals in the biosphere?
B. How is surface water, underground water, and moisture in the atmosphere recycled?
C. How are fossil fuels processed and used to power industries?
D. How does the process of transpiration cause plants to release water through their leaves?
the last one is How are fossil fuels formed from the decay of dead plants and animals in the biosphere?
bot is wrong on the last one
Apologies for the error. The correct answer is:
A. How are fossil fuels formed from the decay of dead plants and animals in the biosphere?
A diagram of the carbon cycle would show the process of how dead plants and animals are buried and converted over millions of years into fossil fuels such as coal, oil, and natural gas through heat and pressure. This process forms an important part of the carbon cycle and can be better understood by studying a diagram of the cycle.
B. How is surface water, underground water, and moisture in the atmosphere recycled?
A diagram of the carbon cycle would best answer this question, as it shows how carbon compounds move between the atmosphere, biosphere, hydrosphere, and geosphere through various processes such as photosynthesis, respiration, decomposition, and combustion. This cycle plays a key role in the recycling of water and moisture in the atmosphere.