1. One reason is extinctions happen because of some kind of change in the environment where a life form lives. While some species can adapt to the changes, others die, and if enough die, the species becomes extinct. These are some of the biggest factors in the extinctions of particular species. 2. Contaminants in the environment, such as pesticides.
I think its b or c im 80.99% sure
Mitosis is process when a cell splits to create two identical copies of the original cell while meiosis cells split to form new cells with the usual number of chromosomes occurs for sexual reproduction while mitosis asexual reproduction
The answer to your question is c!
Physical weathering
The rock chemical composition of the rock was not effect