What controls the timing of gene expression? a. the regulatory sequence for a gene b. the nucleotides that dictate the sequence of amino acids in the protein c. the coding sequence for a gene d. the alleles for a gene e. the transgenic portion of a gene?

Some mining processes involve removal of large areas of earths surface in the mined region this practice causes severe environmental damage by allowing which natural process to accelerate in the affected areas? a.precipitation b.erosion c.migration d.condensation

A60-tooth gear is connected to a 72-tooth gear.if the smaller gear turns 12 times,how many turns does the larger gear make?

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?