Formation of Earth and our Solar system
Convection<span> in the solid mantle drives the many processes of plate tectonics, including the formation and movements of the continents and oceanic crust.</span>
Incoming solar radiation is almost double at the equator then at the poles, causing the water closer to the equator to be warmer. The heat difference also causes the oceans to swirl so the water that is around the equator will eventually end up at the poles and keep circulating around.
B. the most dangerous job in the United States.
Mining is considered one of the most dangerous jobs in the World and 50-60 mining workers die in the United States every year. They are in danger from workplace accidents such as explosions, cave-ins and chemical leakages. Therefore it makes sense that this would be the answer.
Located 8 to 12 degrees north of the Equator, Costa Rica enjoys a tropical climate year round with an average high of 27°C (81°F) and an average low of 18°C (64°F).
Hope it helps :)
