Which mineral property describes a mineral's resistance to being scratched a) streak b) fracture c) cleavage d) hardness

The country in the world with the largest population is_?

Which of the following is not a challenge to instituting sound global environmental policies? a. most changes are inexpensive and easy to implement. b. elected leaders who support unpopular environmental issues often are not re-elected. c. economic considerations outweigh environmental ones in many societies. d. there is no way to enforce international environmental agreements.

What would have happened to portugal’s trade if they had not found a way to sail around the tip of africa