9. Industrial melanism involving the peppered moths (Biston sp.) is cited as an example of natural selection that has been observed in the last one hundred years. Recall that the
peppered moth exhibits two distinct morphological types with dark and light colored
wings. Which of the following statements about changes in these two types of moths as a
result of industrial melanism is true? (1 point)
The dark forms are selected against in nonpolluted forests.
The dark forms are distasteful to birds and are thus safe in polluted forests.
The light forms are selected against in nonpolluted forests.
Birds prey on the dark and light forms equally and neither morph has an advantage
Dark forms emigrate from nonpolluted forests to polluted forests.

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On a recent expedition to a remote region of northern canada, scientists uncovered skeletal remains from about 100,000 years ago. surprisingly, all the skeletal remains, which included many species from differing biological families and spanned about two thousand years, showed evidence of experiencing temperatures in excess of 1000 degrees fahrenheit (or 538 degrees celsius). which of the following, if true, best explains the apparent paradox between the cold environment and the evidence of the bones experiencing hot temperatures? (a) chemical changes that naturally occur during the process of decay in only one north canadian species produce the same evidence of the species' skeletons being exposed to hot temperatures as the expedition scientists found. (b) a little over 103,000 years ago, a large fire is known to have occurred in northern canada. (c) strong evidence exists that as early as 70,000 years ago, homo sapiens around the world relied heavily on fire to cook animals. (d) in the same expedition and in roughly the same layer of excavation, scientists found rudimentary wood cutting and hunting tools used by early humans.

Plz ! a scientist wants to produce a cow that makes a particular human protein in it’s milk the desired protein causes blood to clot and can be used to treat hemophilia (a blood clotting disorder). which of the following would be best for the scientist to use? a. genetic crosses. b. cloning. c. selective breeding. d. genetic engineering.