Humid tropical climate regions are located
a) between 25° and 40° latitude on the eastern sides of the continents
b) halfway between the equator and poles
c) on either side of the equator
d) between 25° and 40° latitude on the western sides of the continents

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

The cell membrane controls what enters and leaves the cell. which of the structures in the diagram below is the cell membrane? — f оооо

How many chromosomes are in a human gamete?