What happened to all of the heat earth had when it formed?

select one:
a. it generated more heat.
b. it has all been cooled by water.
c. it dissipated into space.
d. about half remains in the planet.

Which of the following is the most likely result of converting forestland to urban development? a. the amount of land available for lumber production decreases. b. fewer trees are needed because cities are made mainly of concrete. c. people discover more efficient ways to grow trees. d. the price of lumber goes down.

What is a group of organisms that are closely related and share similar characteristics

Match the pollutants. 1. a chlorofluorocarbon smoke 2. a biodegradable organophosphate insecticide freon 3. particle pollution paint 4. hazardous waste monoxide 5. carbon is completely burned malathion 6. carbon is incompletely burned dioxide