Which of the following is generally considered an environmental issue? (war, poverty, pollution, crime)

Which of the following is one of the four conditions necessary for natural selection to occur in a population? fewer organisms are born than the habitat can support mutation does not occur organisms have identical characteristics variation is inherited

In addition to seeds, which of the following characteristics are unique to the seed-producing plants? a) sporopollenin b) lignin present in cell walls c) pollen d) use of air currents as a dispersal agent e) megaphylls

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?