What is the purpose of CRISPR in the original organisms where it was discovered?

Some mining processes involve removal of large areas of earths surface in the mined region this practice causes severe environmental damage by allowing which natural process to accelerate in the affected areas? a.precipitation b.erosion c.migration d.condensation

According to cell theory; which structures carry out the basic function of living things? a. atoms b. organs c. cells b. nuclei

Anybody know this. a haplontic cycle animal initially reproduces by: mitosis binary fission isogamous fertilization meiosis