During the Devonian Period, animals that could live on land began to evolve. These animals still spent part of their lives in the water. What were these animals called?

reptiles

dinosaurs

amphibians

trilobites

How does the biosphere support life?

What is it called when cities get larger and spread into surrounding areas

What human body system could be fossilized? Explain

The only water on Earth's surface that contains dissolved salts us the ocean. True or False

Why do mass extinctions occur and why do they often mark divisions of geologic time?

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.

Mengapakah delta terbentuk di muara sungai