If you have variation, differential reproduction, and heredity, you will have evolution by natural selection as an outcome. It is as simple as that.
A common rock type found within oceanic crust is called basalt rocks. It is dark just like an igneous rock and it is basically a type of lava from a volcano.
Answer:
Less efficient agriculture
Slower / less industry production
Potential for conflict
5 arrive - 3 leave = 2 left every minute
80 in total - 30 already there = 50 need to arrive
50/2
= 25 minutes
hope this helps :)
