Answer:
The solar mass ( M ☉) is a standard unit of mass in astronomy, equal to approximately 2×1030 kg. It is often used to indicate the masses of other stars, as well as stellar clusters, nebulae, galaxies and black holes.
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Explanation:
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Some Challenges in the tropical rainforest is that Deforestation is common and its really bad because they're limiting the rainforest size just to build homes and towns. Basically, Just forgetting about the habitats and the animals and the other tribes.
A) is not the answer because we use nearby resources as an important factor in the site and growth of cities.
B) is not the answer because we need to be able to go and trade with other cities, or countries.
C) is correct because people don't use the prevailing wind direction as an important factor in the site and growth of cities.
D) is not the answer because we need to be able to defend our city or country.
So the correct answer is C)
Hope I helped.
Unite the country under the rule of a single, Communist government
Answer:
climate change threatens coastal areas which are already stressed by human activity pollution invasive species and storms sea level rise could be rolled and in coastal ecosystems and eliminate Wetlands warmer and more acidic oceans are likely to disrupt Coastal and marine ecosystems
