Skin is sometimes referred to as the largest organ in the body. Why is skin considered to be an organ and not a tissue or some other structure?

Which choice is an example of a producer? A) Sun B) Tree C) Bird D) Water

Which refers to the measure of the amount of water vapor in the air? condensation dew humidity sleet

Scientific knowledge is based on evidence. Where do scientists acquire evidence?

Which of the following is not an example of where primary succession can occur? A.) new valcanic rock B.) land formed from glacial retreats C.) new island forming D.) topsoil after a forest fire

Which statement best explains why the level of ATP in skeletal muscles changes during exercise? Adenosine and phosphate in ATP are destroyed by the muscles. Waste ATP accumulates in the blood stream rather than in the muscles.

You eat a large meal and then hike up a hill. What kind of energy transformation is your body performing? A. Chemical energy to kinetic energy and nuclear energy B. Potential energy to sound energy and nuclear energy C.

Which nervous systems balance each other to provide homeostasis?

The modern classification system is based on A - putting organisms into categories based on where they live. B - putting organisms into categories based on how they reproduce. C - putting organisms into categories based on similar characteristics.

Classify the mutations as somatic or inherited A. Mutations in the KRAS gene in lung cells promote continuous cell growth B. Mutations of the BRAC1 gene in egg cells lead to breast cancer C.

The female determines the sex of mammals. True False