Extinction of organisms is a relatively recent phenomenon attributed primarily to man.

a. True

b. False

The answer is sadly a. true. It's natural for extinction to happen such as events like asteroid strikes, eruptions of volcanoes and natural climate change. With the current crisis, this now involves us, humans, where we are threatening organisms thru human activities like driving habitat loss, global warming, pollution etc.

The correct answer is false. Extinction of organisms is not solely cause by man. Even way before, extinction is already happening. It can be caused by natural or human causes. Natural causes includes volcanic eruptions, earthquakes, floods, etc.