1pt Steven wanted to know which of his new rocks in his rock collection contain iron. How can he determine this through chemical weathering?
O A. Place the rocks in a vacuum sealed environment.
O B. Put the rocks in acid and see how quickly they break down.
O C. Lay the rocks together outside and see if they rust.
OD. Break off a piece of each rock and observe the pieces under a microscope.

How do hydroponic plants differ from nonhydroponic plants? a.) hydroponic plants can grow in a dryer soil. nonhydroponic plants grow in moist soil. b.) hydroponic plants grow on other plants and are known as air plants. nonhydroponic plants do not grow on other plants. c.) hydroponic plants can only grow in rain forests. nonhydroponic plants cannot grow in rain forests. d.) hydroponic plants are grown without soil. nonhydroponic plants are grown in soil.

What should the power status of a circuit be when measuring resistance with an ohmmeter?

The plum pudding model of the atom state that ?