14. People began to make tools out of

Which of the following factors is not associated with sea-level changes: a. melting sea ice b. eustatic changes c. thermal expansion of ocean water d. global warming

Which of the following materials is the least porous? loosely packed gravel sorted sand and rock unsorted sand and rock large pebbles and boulders

Which of the following galaxies do not have a regular structure

Examples of the relationship between climate change and available water include: Select one: a. reduced moisture content in soil b. reduced snowpack c. all of these d. precipitation changes e. salt water intrusion from sea level rise

In southern and southeastern Brazil, the land is ideal for A. mining. B. fishing. C. timber production. D. farming.

Describe the Great Barrier Reef. Why is this site considered one of the world's most important ecosystems?

The diameter of a circle is 5.5m. Find the area of the circle. Give the exact value

Which of the following clouds has the highest base? a. stratocumulus b. cirrocumulus c. altocumulus d. nimbostratus

What kind of map will show you where communist governments are located in the world?

Russia is located in a ___ biome