Population density refers to: O The total number of individuals
O The total number of individuals per square area
O The total weight of all biomass in an area.
O none of the above

Chalk is an ionic compound. which is a property of all ionic compounds that makes chalkboard? particularly useful for writing on a a high melting point hardness and brittleness inability to dissolve in water a multicolored appearance

Epinephrine is a hormone released from the adrenal gland of the body, most often in a stressful situation. it is known as the "fight-or-flight" hormone. one way that it causes a response in the body is to activate receptors on muscle cells. where are these cellular receptors located? a. on the cell membrane b. in the nucleus c. on the cell wall d. around the mitochondria

Beth’s hygrometer is reading a temperature of 30 c and a relative humidity of 65%. the humidity in the air is?