Many ant species live in complex societies. Each ant in the society has a specific role. For example, the queen ant lays eggs. Warrior ants guard the queen. Nursery ants take care of the hatched larvae, and worker ants build the mound and find food. How does this social order help ant populations?
A. It ensures that members of an ant colony compete over mates and food.
B. It ensures that ant populations never get to be too large.
C. It ensures that ant colonies will not have to compete with other ant colonies. D. It ensures that labor and resources are adequately shared.

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

Which of the following forest management practices is best for reestablishing areas of forest?

Achange in which factor will affect the rate of reaction only when gases are involved? temperature pressure surface area concentration