Brass gets discoloured in air because of the presence of which of the following gases in air?

A. Oxygen

B. Hydrogen sulphide

C. Carbon dioxide

D. Nitrogen

Which is a trait of an index fossil? A. Resembles a living species B. Found in a limited area C. Found in a limited time span D. A particular kind of organism

Does it appear that pod shape exhibits a dominant and recessive inheritance pattern? if so, which allele is dominant, and which is recessive? how do you know?

Describe the miller-urey experiment

Which characteristics is common to all prokaryotes and eukaryotes

What group number are the alkali metals?

What tool is use to measure an objects mass?

Which of the following statements about the electron transport chain is true? a. The proton gradient established during electron transport is a form of potential energy. b.

Which analogy best describes theories? Theories are like rocks because they can change but not easilly. Theories are like tides because they frequently go back and forth. Theories are like time because they are eternal and never change.

What happens at level IX on the mercalli scale?

Describe at least one property that occurs because of the polarity of water