<span> background extinction rates
historical mass extinctions
increased threats to modern endangered species
habitat fragmentation overexploitation of species
I think the answer is </span><span>Historical mass extinctions </span> Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
In what phase of cell division does exchange of genetic material between non-sister chromatids, or “crossing-over,” occur? It occurs in prophase 1 of meiosis
Explanation:
In prophase 1 of meiosis there is crossing of genetic material
