13. What is macroevolution? genetic changes among and within populations
minor changes in populations over a long time
changes in a population's allele frequencies
major changes in populations over a long time

  Evolution is a process that results in changes in the genetic material of a population over time. ... Microevolution reflects changes in DNA sequences and allele frequencies within a species over time. These changes may be due to mutations, which can introduce new alleles into a population.

air, water, heat and noise pollution can all be caused by producing and using technology. consuming resources - non-renewable resources, including precious metals like gold, are used to make technology