Estimate the number of times the earth will rotate on its axis during a human’s lifetime.

Which of the following force diagrams correctly displays the forces acting on the toy in the vertical direction. 2 vectors of the same size, one pointing up and one down. Vector pointing down is longer than vector pointing up Vector pointing up is longer than vector pointing down 1 vector pointing up 1 vector pointing down No vectors

Determine the size of the frictional force the floor exerts on the toy.  Include units in your answer.

Describe three characteristics of the mammalian brain that differ from other vertebrates.

What characteristics differentiate lizards and snakes?

Describe three skeletal adaptations that allow for flight in birds.

Describe the hypothesized steps in the origin of eukaryotic cells.

Which of the following is a mechanism used by digoxin to treat heart failure?

How do the products of glycolysis and the Krebs cycle relate to the electron transport chain?

Plant cells often have a large membrane-bound sac that is used for storing water and other substances called a