Mutations cause structural changes in what? I need this fast please and Ty

The bacteria found in soil is usually harmful and measures are taken to remove any traces of microorganisms. true or false

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

The frequency of alleles in a population that is in hardy weinberg equilibrium? a . changes in each successive generation b. is less important than the frequency genotypes c. shows evidence of the process of natural selection d. remains the same over several generations