Heat flow in the oceans and the atmosphere is
A. Cool flows down-warm flows Up
B. Cool flows up - warm flows down
C. Cool flows up - warm flows Up
D. Cool flows down-warm flows down

Seed plants that lived during the carboniferous impact life on earth today because a. they are the ancestors of all plant life on earth. b. their remains formed coal, which is an important resource. c. they produced fossils that are used to date many geologic events. d. their presence caused oxygen levels to drop, allowing animals to evolve.

Acharreadas is a popular mexican thing where people display varying skills of horsemanship much like what events in the united states?

Which of the following statements best describes what is occurring in the land surrounding the sahara desert? a desertification is increasing, and the desert is expanding. b. fewer people are trying to farm in this semiarid region. c. the desert is shrinking with the increased use of irrigation. d. increased urbanization has resulted in decreased deforestation. select the best answer from the choices provided mark this and return save and exit next submit