This is the liquid water component of the earth. it includes the oceans, seas, lakes, ponds, rivers, and streams. it covers about 70% of the surface of the earth and is the home for many plants and animals.
a) atmosphere
b) geosphere
c) hydrosphere
d) lithosphere

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

Which characteristics of temperature and salinity have the greatest influence on the movement of deep-ocean currentsa. warm and low salinityb. cold and high salinityc. cold and low salinityd. warm and high salinity

Which physical law states that all orbits are conic sections?