Which distinction below would a dichotomous key not identify?

a.) blue or green

b.) circle or square

c.) purple or triangle

d.) tall or short

What happens whenever a net force acts on an object

Which is a genetic engineering advancement directly related to a career in biotechnology? 1) improving solar energy collection 2) transporting textiles at higher rates 3)creating crop foods that resist insect pests 4)repairing historical sites with quality materials

Which of these is not a nucleotide base found in dna?