Genetic variation<span> occurs </span>mainly<span> through DNA mutation, gene flow (movement of genes from one population to another) and sexual reproduction</span>
Answer:
The answer is natural selection
Explanation:
The modern theory of evolution was developed by Charles Darwin, an amateur English naturalist, in the 19th century
An impulse relayed along a myelinated axon jumps from node of Ranvier to node of Ranvier.
<span>I personalilty believe that there is four major negative impacts of technology
-Technology Can Put Privacy and Safety at Risk
- </span><span>More Use of Technology with Less Physical Activity Leads to Obesity
- Technology changes the way children feel and think
- CYBERBULLYING </span>
A difference between plant cells and animal cells is that most animal cells are round whereas most plant cells are rectangular. Plant cells have a rigid cell wall that surrounds the cell membrane. Animal cells do not have a cell wall.
