What is the number of species present in an ecological community known as?

Why do people live on islands tend to develope very different customs from thise who live in other parts of the world

Erosion is responsible for the formation of: volcanoes deltas glaciers all of the above

Changes in the ocean current patterns brought by El Niños A. devastated whole civilizations. B. were necessary for farming in the Andes. C. brought winds that enabled trade with the Pacific islands. D.

Who were the two countries africa that were able to hold off European invaders

How can I collect primary data for the environmental impacts of urban development in a local area?

Cindy takes two pages of notes during each hour of class after attending 17 hours of class how many total pages of notes will Cindy have in her notebook

Is north america north or south of the equator

The Aztecs and Incas were treated by Cortes and Pizarro.

A violent thunderstorm that can produce a tornado is called a what? A) an updraft B) An mesocyclone C) An supercell D) An hurricane

Which igneous rock forms when magma inside the earth solidifies?