Which compound was abundant in Precambrian Earth's oceans, before complex life evolved on Earth?

What is the five natural agents of erosion?

What major body of salt water is 800 miles east of Nairobi, Kenya

All of the following are accurate statements about Western Europe except?

Which area of New York is made up of gravels, sands, and clays?

What is an urbanised area?

Trees in deciduous forest do what? A. Shed leaves during one season B. Grow in a warm Mediterranean climate C. Have needlelike leaves D. Grow in a climate that is cold year round

How many miles long is the great wall of china

What landforms are created at convergent boundaries?

In which direction does the Sun appear to move across the sky? Ofrom west to east from east to west from north to south from south to north

What is a planetary nebula neither a planet nor a nebula?