1. Plastic Waster
2. Air Pollution
3. Toxic Sludge Dumping
Answer: the proper number of chromosomes.
Explanation:
Variation- Heritable differences that exist in every population are the basis for natural selection
Overproduction- Competition for resources for resources
adaptation- A trait that helps an organism survive and reproduce
decent with modification- Natural Selection will result in species with adaptation that are well suited for survival and reproduction.
I think that is might be 25%. I hope that helps.