The steam that can be seen coming out of a boiling kettle consists of condensing water droplets. These water droplets move upward with the hot water vapor coming out of the kettle. The process of hotter air rising and cooler air falling is called convection. What role does convection play in the atmosphere?
A. Convection makes the air warmer at higher altitudes.
B. Convection currents distribute heat in the atmosphere.
C. Convection prevents the air in the atmosphere from moving.
D. Convection transfers heat from the atmosphere to the ocean.

In sexual reproducing animals once fertilization of the egg takes place, the exists as a single cell until cell division begins. a) egg b) larva c) sperm d) zygote

Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling

If the frequency of the p allele is .63 in the population then what is the frequency of the q allele?