Which of the following is an example of how a changing environment is important for the sustainability of living systems?   a.  the water cycle ensures that water used by one organism will be available for another organism in the future.  b.  the erosion of top soil reduces the diversity of organisms in an ecosystem.  c.  global climate change may lead to the extinction of many species that are unable to adapt to the changes.  d.  all of these

Is genetic diversity the same as genetic variation?

Read the article and use the information to answer the questions that follow discovering the structure of dna explain how the discoveries by rosalind franklin watson and crick build an accurate model of dna done

Whenever diploid populations are in hardy-weinberg equilibrium at a particular locus a) the allele's frequency should not change from one generation to the next, but its representation in homozygous and heterozygous genotypes may change. b) natural selection, gene flow, and genetic drift are acting equally to change an allele's frequency. c) this means that, at this locus, two alleles are present in equal proportions. d) the population itself is not evolving, but individuals within the population may be evolving.