What unit of time on earth is based on the revolution of the moon around earth?

How can events in one part of the world impact other regions?

Why landforms affect people?

A defining characteristic of sympatric speciation is Group of answer choices a. The appearance of new species in the midst of old ones b. Asexually reproducing populations c. Geographic isolation. d. Artificial selection e. Large populations

Orographic lifting refers to a. convection stimulated principally by local heating b. lifting along the edges of conflicting air masses c. forced uplift due to the presence of a physical barrier d. none of the above

How did the annual flooding of the Nile River support agriculture in ancient Egypt?

Lines of latitude and longitude form a pattern called a

Why is Bristol an important international city

Why are environmental issues a major concern for people of Sub-Saharan Africa?

Which revelation resulted from the observation of the spectrum of different galaxies? A. there were more galaxies whose spectrum was blueshifted B. there were no galaxies whose spectrum was redshifted C.

Why are people are able to live in deserts, mountains, and tundras?