Which is an example of science playing a role in developing technology? the use of an electric spark to produce amino acids from gases that are present in Earth’s early atmosphere
the discovery that Penicillium mold produces a substance that prevents bacterial growth
the improvement in lens-grinding technology, which led to the discovery of cells in cork
the discovery that microwaves can pop corn, which led to the creation of microwave ovens

City a and city b had two different temperatures on a particular day. on that day, four times the temperature of city a was 8â° c more than 3 times the temperature of city b. the temperature of city a minus twice the temperature of city b was â’3â° c. what was the temperature of city a and city b on that day? city a was 5â° c, and city b was 4â° c. city a was 3â° c, and city b was â’1â° c. city a was 8â° c, and city b was â’3â° c. city a was 5â° c, and city b was â’5â° c.

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

Which statement explains why the bonds between non metals tend to be covalent? the bonds are found to be nondirectional they have large differences in electronegativity they have small differences in electronegativity they have ions that produce an electrostatic pull