non-branching evolution does not change the total number of species?
Dna replication needs to occurs because existing cells divide to produce new cells. Each cell needs a full instruction manual to operate properly. so the dna needs to be copied before cell division so that each new cell receives full set of instructions. - Google
1. The trade winds
2. The Coriolis Effect, in combination with an area of high pressure, causes the prevailing winds—the trade winds—to move from east to west on both sides of the equator across this 60-degree "belt." ... The sinking air triggers the calm trade winds and little precipitation, completing the cycle
3.north south direction