Which phenotypic change is genetic? a. the flower color in a population changes overtime. b. plants in a field are smaller than usual after a drought. c. an individual cuts his hair and changes its color. d. a person with fair skin gets severely sunburned.

What is the importantence of the carbon and nitretan cycles in the environment

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

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere,b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify,d)anaerobic bacteria kept thriving with more oxygen