lithosphere- rocks and crust, 300 to 500 °C
mantle-silicate rocks rich in magnesium and iron,500 to 900 °C
outer core- iron and nickel, along with small amounts of other dense elements like gold, platinum, and uranium. 4400 to 6100 °C
inner core-iron, 5982°C
False, evaporation happens when when atoms or molecules escape from the liquid and turn into a vapor .
Answer:
Explanation:
1. Many issues that affect Africa today are the result of which of the following?
C. European Imperialism
2. A developing country is plagued by malaria. A vaccine for malaria is distributed throughout the country. What will most likely happen next?
C. The country’s infant mortality rate will decrease.
3. Africa has traditionally been a vast, difficult continent to transverse. Today Africa is more open to tourists, trading partners, investment, and urban developments. Which of the following contributions by colonial powers in the region has contributed to this new openness?
C. design and building of transportation infrastructures such as roads, bridges, and railroads
4. Which of the following is an example of a “Pandemic” disease in Africa?
B. AIDS
<span>Unpredictable floods, small & defenseless region, and limited natural resources.</span>
Answer:
They have reduced the river's force to almost nothing by the time it finally empties into the sea.
Explanation:
The Colorado River is one of the biggest rivers in North America. It runs mostly through the United States and little through Mexico where it ends its flow and empties into the sea. This river has been the subject of heavy exploitation by humans, and for that purpose, numerous dams have been built on it.
The number of dams is so high and the water is used at such a high rate that the river barely has any water as it empties into the sea. As this river runs mostly through arid and semi-arid areas that are also used for agriculture, its waters are heavily used for irrigation, leaving less and less water in the river as it gets closer to its endpoint. The dams are helping a lot in the economies of the states through which the Colorado River runs but the effect on the ecosystem of the river has been devastating.
