What is most abundant component of air by volume?

A. nitrogen

B. oxygen

C. hydrogen

D. ozone

A perk of their late technological development is that most people in Sub-Saharan Africa are connected via

The surface area of earth is 510 ✕ 106 km2, and 71% of this is ocean. using the data from the sample exercise, calculate the average depth of the world's oceans in feet.

Speciation has definitely occurred when two groups of related organisms A) cannot interbreed successfully. B) have drastically different behaviors. C) have drastically different appearances. D) become permanently isolated from each other.

Which of the following is not a disadvantage of using wind power? A. Turbines are expensive. B. Birds often fly into fan blades. C. Energy production decreases at night. D. Turbines are only effective in specific areas.

When farmers in Central America do NOT use pesticides on bananas, it generally results in taller banana trees and larger bananas. True False

Choose the state and capital that border the east coast of the United States.

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