The color of a mineral's powder is called its a. streak. b. luster. c. density. d. hardness.

Energy needs vary greatly; between an urban city and a rural community due to population as well as availability. The most common renewable energy resource for an urban area is a) power lines b) solar panels c) nuclear power d) wind turbines

What does one prolonged blast plus one short blast signal to a river lock attendant?

Fossils on the continent may be similar to fossils on another continent. This observation supports which theory?

What happens when the liver stops producing bile juice

If you have normal vision, your eyes are not covered, and you are in a well-lit area, then opening your eyes is a necessary and sufficient condition for seeing. True or False?

How do air and water movement, and land masses affect the climate

Under what circumstances does membrane transport always require energy?

What is one disadvantage of using plasma gasification to detoxify hazardous waste?

Euglena use which structure for movement? A. cilia B. flagella C. pseudopods D. they do not move

1. What is a reproductive process in which a cell's genetic information is duplicated and then divided to produce a single identical daughter cell from an outgrowth of a larger parent cell? A. production of spores B. budding C. binary fission D.