Which statement best describes an increase in biotic potential? O Deer increase their rate of reproduction on an island.
Rabbit population increases in a grassland biome.
O Lions have larger broods and decrease hunting.
Seals have more offspring when food is scarce.

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

The terrestrial planets are characterized by having a a.) silicate core b.) iron-rich silicate core c.) iron-rich metallic core d.) none of these

2. sketch the inside of the bean nodule, and describe or label what you observed with the hand lens.