Which continent has 60 percent of the worlds population?

Which of the following regions has what is considered the most rugged terrain in oklahoma? a. the wichita mountains b. the arbuckle mountains c. the sandstone hills d. the ouachita mountains

According to the earth science reference tables, during which geologic time period were the continents of north america,south america, and africa closest together?

Why is canada's east coast a great fishing area? will name brainliest and 30