After conception, the main organs are established by the end of the

(a) third day.

(b) second week.

(c) eighth week.

(d) fourth month.

If a circle has a diameter of 16 feet, which expression gives its area in square feet? O A. 8² ... OB. 16². R O C. 16•T O D. &•R - - FUEL

Which dna sequence results in an identical new sequence during both replication and transcription?

A food chain follows the connection between one

Is composed of individuals who are separated geographically but linked by communications technology?

About how much energy is transferred from a primary consumer to a sencondary consumer a. 90% energy from sun b. 10% energy from sun c. 10% primary energy d. 1% primary energy

ALL BUT ONE factor is believed to be the source of Earth's internal heat energy. That is

Which advantages does the skeleton of birds provide for flight? a. Light hollow bones b. Volume and heavy weight for lift c. Rigid structure to anchor strong muscles for flight d. Loosely unconnected bones

What percentage of information is considered visual while driving?

How will changing the rate of respiration affect an organism's mass

Explain how blood is prevented from flowering backwards in the heart