What is the most sensitive part of the brain?

How many types of rock can form from the rock cycle

In the sentence "a mining company will consider the distribution of coal when deciding how to mine the coal," what does the word distribution mean?

What is genetic variation? -(a) each individual in a population has slightly different genes. -(b) some individuals in a population have more genes than others. -(c) each population of a species has slightly different genes. -(d)some populations of a species have more genes than others.