How would you describe the mineral’s cleavage? Is it one plane or more planes? How many? How do you know? Mineral A:

Mineral B:

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

What amino acid is coded for by this sequence after the mutation

How can you tell the difference between rough er from smooth er?