That would be natural selection, artificial selection involves a human choosing for a beneficial trait
Probably like cave men since they had stone tools
Answer:
The Poverty rate
Explanation:
According the OECD guideline, poverty rate is the ratio of people's number with income less than poverty line. Therefore, to fulfill this definition the abovementioned criterion must be satisfied.
A zygote is the product of fertilization. The diploid zygotes of the four organisms seen here all underwent Mitosis and differentiation in order to produce the four very different embryos. In mitosis cell divison occur in which mother cell divide to form two daughter cell . When we talk about the cell differentiation , it is the process in which cell changes from one form to another.