Please pick one question to ask at a time - both of these questions have already been asked and answered.
Natural selection occurs when four conditions are met: 1. There is variation among individuals. 2. That variation is at least partially heritable. 3. That variation is linked to differential reproductive success. 4. More individuals are born than can survive and reproduce.
when there is competition
The four stages are: Overproduction, Genetic Variation, Struggle to Survive, and Successful Reproduction
Overproduction, genetic variation, selection, and adaption
I'm not sure if it occurs in Ohio and Midwestern States.
Inheritance of acquired characteristics is not one of Darwin's four main ideas of natural selection. His four main ideas are variation, competition, heritability, and differential reproductive success.
See the related answer below for an answer to this question.
- natural selection - sexual selection - genetic drift - immigration/emagration
The four pieces of evidence that scientists point to as proof of natural selection are the fossil record, biogeography, homologous structures, and observable natural selection in action. These pieces of evidence all support the idea that organisms have evolved over time through the process of natural selection.
overproduction: to many offspring and 3 others
Mutation, Natural Selection, Migration, and Genetic Drift.
The question is semantically equivalent to asking 'What are the four parts of the existence of a banana?' I cannot answer it.