29 Which of these is the best summary of "Geothermal Energy"?
A People around the world use geothermal energy to heat their homes. Heat pumps are energy
efficient, environmentally clean, and becoming more popular as years go by. The United
States leads the world in geothermal electricity generation. California is the national leader in
geothermal electricity. Many California homes use heat pumps.
B Geothermal energy occurs naturally and often comes to the surface of the Earth in volcanoes,
fumaroles, geysers, or hot springs. Many of these are found in western states and Hawaii. Some
geothermal features are located in national parks like Yellowstone, where they are protected.
Some are found in Iceland and the Philippines.
C Geothermal energy comes from heated water or steam. Most of the major geothermal activity
in the world is located around the Ring of Fire, which circles the Pacific Ocean. People who live
in these areas can use heat pumps to get the energy out. This is because soil temperatures are
usually cool in summer and warm in winter.
D Geothermal energy is recovered from water or steam heated by forces beneath the Earth.
Geysers and hot springs are natural sources of this heat energy, which is widely used to generate
electricity in the United States and elsewhere. Heat energy can also be used to power heat
pumps, which are clean and efficient methods of heating and cooling.

In just over one hundred years, between 1701 and 1810, 252,500 enslaved africans were brought to barbados—an island that occupies only 166 square miles (making it, today, one of the smallest countries in the world). the english then set out to conquer more sugar islands, starting with jamaica, which they took from spain in 1655. in the same period that the 252,500 africans were brought to barbados, 662,400 africans were taken to jamaica. thus, sugar drove more than 900,000 people into slavery, across the atlantic, to barbados and jamaica—and these were just two of the sugar islands. the english were eagerly filling antigua, nevis, saint kitts, and montserrat with slaves and sugar mills. they took over much of dutch guiana for the same reason. seeing the fortunes being made in sugar, the french started their own scramble to turn the half of the island of hispaniola that they controlled (which is now haiti), as well as martinique, guadeloupe, and french guiana (along the south american coast near dutch guiana), into their own sugar colonies, which were filled with hundreds of thousands more african slaves. by 1753, british ships were taking average of 34,250 slaves from africa every year, and by 1768, that number had reached 53,100. –sugar changed the world, marc aronson and marina budhos how do the authors use historical evidence to support their claim? x(a) they use secondary sources to show how french and english monarchs were indifferent to enslaved people. x(b)they use secondary sources to show that enslaved people often fought for their freedom after arriving in the caribbean. the answer is: (c)they use facts from primary sources to show how countries increased the number of enslaved people to produce more sugar. x(d)they use primary source interviews to show that countries could make more money in trading sugar without using enslaved people.