During what geologic period did the bony ray-finned fishes diversify tremendously and begin to dominate the aquatic habitats of Earth and when the lobe-finned fishes first appeared.

Explain why Wegner's use of shorelines to match continents in his reconstruction of Pangaea was criticized by other geoscientists and how that issue was subsequently resolved in Plate Tectonic Theory.

What is a hemisphere? the line of longitude known as the prime meridian one-fourth of the area on Earth the line of latitude known as the equator a half of the world, split by either the prime meridian or the equator

The material wealth gap in the United States increased from the 1970s to the 2000 due to, other factors

When constructing a geologic time scale, how should you divide chunks of time?

Big spenders are also known as low yield tourists, because they typically expect air conditioned hotels with English - speaking staff and imported food from their home country. True False

What is the most important reason that astronomers have learned more about our planetary system in the last 30-40 years than all of history before then?

Which type of economic activity is located at the site of the resource being exploited? Which activity can be located almost anywhere?

Which type of reaction occurs in the core of a nuclear reactor in a nuclear power plant?

Population is increasing more rapidly in LDCs than in MDCs. True or False

What was the source of the difficulty Great Britain faced in preparing palestine fro