How does a sunshine recorder work

The earth is composed of three different chemical layers: core, mantle and crust. the formation of these layers was from a process called

Which of the following best describes the purpose of a nation’s boundaries? a. to limit the movement of goods and people b. to make it easier for cartographers to create maps c. to make the movement of goods and people easier d. to prevent other countries from invading territory

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