Answer:
in the Paleozoic Era the trilobites, fish, land plants, and amphibians evolved throught out the Paleozoic Era. In the Mesozoic Era birds, reptiles, mammals, and flowering plants appeared or evolved throught out the Mesozoic Era. In the Cenozoic Era humans and mammals evolved throught out the Cenozoic Era.
Explanation:
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Answer:
That ozone protects us and other living things from the Sun's harmful ultraviolet rays. Satellites have shown that the ozone is disappearing over some parts of Earth. So, we know that we must find and use chemicals that are less damaging to our atmosphere. We use satellites to predict the weather.
Explanation:
Answer:
because urban areas are cenralized thus allowing one reach a bigger market
Explanation:
1. A- the economy faced serious challenges
2. B- Modernized
The industrialization of the late nineteenth century brought on rapid urbanization. The increasing factory businesses created many job opportunities in cities, and people began to flock from rural, farm areas, to large urban locations. Minorities and immigrants added to these numbers.