The characteristic of a cell membrane that allows materials to pass through it is called
a. permeability
b. polarity
c. synthesis
d. catalysis

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind

What is the period of cell life when it is conducting

Which measure of an earthquake depends on how close you are to the focus?