In addition to comets, water for Earth's early oceans might have come from

A. rain.

B. rivers.

C. cyanobacteria.

D. volcanic eruptions.

The number-one "green" country in the world is Australia. T/F

a) The Mayans and Aztecs made notable advances in astronomy and mathematics. b) The Aztecs and Mayans learned to read and write under Spanish rule. c) The Aztecs and Mayans had no concept of the wheel.

What was one of the negative effects of the industrial revolution

What is the second largest ocean in the world?

About how many miles is there between the east and west coasts of Australia using this map's scale?

1. What is the trading route between the Indian Ocean and the Mediterranean Sea? 2. What lies between the Arabian Peninsula and India? 3. What is west of Yemen? 4. What is east of the United Arab Emirates? 5.

What types of areas are created by sinking, dry air at 30 degrees north or south latitude?

The us congress passage of the Homestead act in 1862 can be considered a pull factor that caused people to migrate to the us

Name the river that forms a border between the states of washington and oregon

Match the city in column 1 to its description in column 2. A. Shenzhen B. Tianjin C. Nanjing D. Guangzhou Located near Beijing; has agriculture and manufacturing. Former capital of China with rich history and culture; large manufacturing center.