Study the timeline. Which statement indicates what the fossil record suggests about evolution on Earth?

Humans have only recently existed on Earth.

Organisms originally lived only on land.

Life on Earth started before water formed on Earth.

Multicellular life evolved before complex single-celled life.

What is special about a dc circuit ?

The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.

Which radioisotope is used in dating geological formations?