Which is not an intrusive igneous rock?

The extinction event at the end of the Permian affected only land-dwelling organisms. Indicate whether the statement is true or false

Glacial striations, roche moutonées, and drumlins allow scientists to identify the direction of glacial movement

Indicate whether the statement is true or false

The greatest loss of biodiversity in the last two centuries has resulted from

A) the introduction of alien species to new ecosystems. B) the use of fossil fuels to power transportation and electrical production. C) the physical alteration of habitats. D) the use of rivers, lakes, and oceans for transportation.

As global populations increase demands for water and global warming continues, the most sustainable source of water for poor developing countries will be

A) groundwater aquifers. B) dams to capture runoff water. C) estuaries. D) desalination plants.