Which property of a mineral is tested when it is hit with a hammer and breaks into flat sheets?
a) color
b) hardness
c) cleavage
d) streak

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

Glucose is broken down in different ways, both in the presence and in the absence of oxygen. using the table for reference, what major products are formed in each reaction set?

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these