1 2
3
4
5
0
8
co
How many pairs of chromosomes do humans have?
22
23
ООО
44
46

In what way are cities microclimates?

Does the sun release radiant energy?

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