Review - History of Life

Front

What does sudden changes in the fossil record represent?

Back

Mass extinction.

Front

True or False: Impacts from comets and large meteors contributed to mass extinctions by kicking massive amounts of dust and debris into the atmosphere.

Back

True.

Front

Which rock layer contains the newest fossils?

Back

Layer F.

Front

What happened to anaerobic bacteria due to the massive release of oxygen into the atmosphere?

Back

Mass extinction.

Front

What does the gas in the apparatus mimic?

Back

Atmosphere.

Front

Define mass extinction.

Back

A rapid decrease in the biodiversity on Earth, where a significant number of species become extinct in a relatively short period of time.

Front

What is the significance of the fossil record in understanding the history of life?

Back

It provides evidence of past life forms and their evolution over time.

Front

What role do comets and meteors play in mass extinctions?

Back

They can cause catastrophic events that lead to significant environmental changes, resulting in the extinction of many species.

Front

What is the relationship between oxygen levels and the evolution of life?

Back

Increased oxygen levels allowed for the evolution of aerobic organisms and complex life forms.

Front

What is the geological time scale?

Back

A system of chronological dating that relates geological strata to time, used to describe the timing and relationships of events in Earth's history.