<span><span>Earth's atmosphere traps energy from the sun, whichcauses meteors to burn up.
allows ozone to form easily.
allows solar radiation to penetrate to the surface.
allows water to exist as a liquid.
Air has pressure because
wind moves the air.
the stratosphere is thick.
temperature warms the air.
air has mass.
The layer of the atmosphere between the stratosphere and the thermosphere is called the
mesosphere.
troposphere. (below stratosphere)
exosphere.
ionosphere.
When climbing a high mountain, you get out of breath easily because
air pressure is greater.
the air is more dense.
the percentage of oxygen in the air decreases.
there is less oxygen in each cubic meter of air.
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A, tourists do not go to work or visit farms or work in the factories , they go to visit its world-famous cities .
Around 1800 (plus or minus about 5 years) is when it was estimated that the world's population had reached 1 billion.
Answer:
otayy, leo.
the oldest mountain, we can say its been around for a while now so it would make sense as to why it would be leo. since its been around the earth has changed and moved shifting plates etc, this takes time. making leos answer make more sense. again im not sure abt this response but this answer (leo) should be right
Answer:
The correct answer is D. National Parks are an invention of the United States that has spread around much of the world, as a way of protecting some of the finest parts of the world.
Explanation:
A national park is a park in which the protection of nature comes first, albeit almost always in alignment with human activities (in particular recreation, often also forestry, agriculture, hunting and fishing, sometimes mining) in and around the national park. The state usually recognizes the national significance of such a park and guarantees its protection. The term was coined in the US around 1870. Shortly thereafter the Yellowstone National Park was founded in a special area with geysers and bison among others. This park serves as an example for many other parks. Since then, hundreds of national parks have been established worldwide.
