The long term effects of mining include
a.
acid drainage
b.
erosion
c.
dust emissions
d.
all of the above

Select the correct answer from each drop-down menu. in an experiment, dr. travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. the amount of calcium is variable. the risk of bone fractures .

Which of the following describes a boom period? a. as one population increases, another population decreases. b. as one population increases, the other population also increases. c. as one population decreases, another population increases. d. as one population decreases, another population also decreases

Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?