Groundwater supplies can be easily contaminated by surface mining of coal. ALL BUT ONE may be how surface mining might adversely affect groundwater conditions,
A) direct dumping of tailings and effluents into rivers
B) water used in the chemical extraction of metals, commonly contains process chemicals
water which has trickled through solid mine wastes may contain dissolved minerals, process chemicals, and/or metals
D) technologies used to control water flow prevents contamination

Predict the results of a two base insertion or deletion in a strand of dna that codes for a protien, how does this differ from a three base insertion or deletion?

Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. an incomplete dominance cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. purple offspring result. then, two of the purple offspring are crossed. according to the punnett square for this cross, how many of the offspring from the second cross will have a feather color that results from incomplete dominance? 1 in 4 2 in 4 3 in 4 4 in 4

What are some natural processes that represent physical and chemical changes?