Different periods in human history are named for the materials used to make tools. dr. franklin is searching through layers of soil, looking for tools made by humans. after screening the top layer of soil, he uses a magnet to speed up the search.
which type of location is dr. franklin most likely searching?
a. a cave from before the stone age
b. a stone age cave a
c. bronze age battle site
d. an iron age farm

2. how does the miller-urey experiment fall short of demonstrating that life can arise from inorganic molecules? explain. a. it doesn't show a leap between a collection of amino acids and a single-celled organism. b. it recreates the conditions that existed at the earth's beginning, but no molecules form as a result. c. it doesn't provide evidence of the formation of amino acids. d. it doesn't show how multicellular organisms developed from unicellular organisms

Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?

Aheterozygous normal male marries a woman with a sickle cell anemia. give the genotypes and possible phenotypes of the offspring