Which of the are the two main characteristics used to classify air masses.

A. direction

B. temperature

C. speed

D. humidity

A series of closed contour lines would most likely represent which of the following? a) Hill b) Ridge c) Valley d) Spur

Which East Asian country remains poorly developed and isolated under a Communist regime? A. South Korea B. Taiwan C. North Korea D. Japan

Describe what state the body is in when all of these systems are working well

Which of the following is an example of the environment affecting a person? A The environment doesn't affect people.

What are the diverging plates associated with the formation of Iceland?

Which of the following items was used as a meat tenderizer and also eaten? a. Cacao beans b. Pineapple c. Papaya d. Guava

Terraces are used in agriculture two

The countries of Guyana, suriname, and French Guiana all share which of the following

People with asthma or other respiratory illnesses are at greatest risk from which of the following environmental problems? A. urban heat islands B. water pollution C. acid rain D. air pollution

Explain in a paragraph why many russian orthodox churches are found in alaska