NRES 101 Midterm Exam Questions 2024.

NRES 101 Midterm Exam Questions 2024. T/F: Species diversity increases as you approach the equator - correct answer True What are possible reasons why more species occur near the equator - correct answer - More time without geological disruptions (e.g., glaciers) - More niches - Climatic stability - Greater biological productivity What is speciation - correct answer The formation of two species from one ancestral species What factors lead to speciation - correct answer - natural selection - sexual selection - genetic drift How does speciation normally occur? - correct answer allopatric speciation - one population becomes separated into two or more What is the primary hypothesis for why dinosaurs went extinct? - correct answer Huge meteor hit 65 million years ago and almost everything was wiped out What changes lead to allopatric speciation - correct answer Environmental changes (e.g. glaciers) What 4 hypothesis have to do with the death of the megafauna? - correct answer - Overkill hypothesis - climate change hypothesis - disease hypothesis - meteor hypothesis