Human activities can add which following to the atmosphere?

a. oxygen

b. water vapor

c. heat

d. carbon dioxide

A boater sounds five short blasts on a horn. What does this signal mean?

The equator is 0 degrees latitude?

Which of the following has the distinct advantage of accurate shape and area? A) a plane projection B) a conic projection C) an interrupted projection D) a mercator projection

According to the information in the captions how long were bald eagles missing from the adirondacks?

Which statement best describes saturation?

Why is Dubai creating underwater resorts and reclaimed islands? Dubai has an incredible amount of money to spend on building projects. Dubai's population is growing at a very fast pace, some say too fast.

Where was the maya civilization located

The widespread presence of banana plantations in central america region has resulted in increased standard of living

Which of these has been the result of human activity? a) glaciers melt more b) volcanoes erupt more landslides happen more d) earthquakes happen more

Which types of stars have extremely intense gravitational and magnetic fields?