Human activities can add which following to the atmosphere?

a. oxygen

b. water vapor

c. heat

d. carbon dioxide

How does cairo rank on size compared to other african cities?

The type of rock from which a soil forms

What is the most populated country?

What is the U. S doing to protect their energy future

What substance is a powerful contributor to weathering and erosion on earth? a. water b. oxygen c. carbon dioxide d. heat

ok so if i was to go to Antarctica and keep going south i should be able to go to Svalbard Norway right since the earth is round. because i was looking at my world map in my house and i started thinking about that.

Provide at least three differences between the ancient Hebrew religion and other world religions of the time. Provide at least one way in which the Hebrew religion was similar to another world religion of the time.

What did Europe do to solve under population?

Which of the following is true about ecosystems?

1. When governments seek a favorable trade balance, they want A to raise taxes on exports B imports to equal exports C to export more than they import D to import more than they export