Which of the following is a limiting factor in a population of organisms.

fluctuations in atmospheric temperature

availability of food

life spans of the members

reproductive replacement

To treat flower containers and kill bacteria, a designer should use a. soap b. water c. bleach d. dextrose.

Which of the following statements about diploblasts and triploblasts is false? a. Animals that display radial symmetry are diploblasts. b. The mesoderm gives rise to the central nervous system. c. Animals that display radial symmetry are diploblasts.

The enzyme helicase unwinds the DNA duplex. Which of the following is likely to be true? A) A pre-existing 3'OH is required for helicase to work B) Helicase uses energy from ATP Hydrolysis C) Helicase is itself made of RNA D) Energy is released when

How do scientists learn more about the layers of earth through seismic waves

Which is true of prokaryotic and eukaryotic cells?

A. Many parts of the brain appear to have no useful function in today's world. b. Losses of small areas of certain parts of the brain rarely cause devastating, often permanent, losses of function. c.

Which of the following states was not a member of the Confederacy?

A sand bar that completely crosses a bay, sealing it off from the open ocean, is called what

Plant morphologist have developed a hypothesis that leaves are flattened stems between which tissue has developed? True or false

Under which condition is competition among wolves most likely? A. When new vegetation grows in the habitat, bringing new prey to the area B. When a disease kills a large amount of the rabbit population C.