Two metal balls are dropped from the top of a two-story building at the same time. one ball is twice as heavy as the other ball. which statements about their motion are true? assume that air resistance isn’t a factor.

Plz genetic engineering can be applied to many fields including medicine and agriculture. which of the following is a medical application of genetic engineering? a. giving crop plants recombinant dna so that they would be resistant to herbicides. b. examining a persons pedigree to determine whether they can carry a gene for a genetic disease. c. analyzing a persons dna to see how closely they are related to another person. d. certain genes into bacteria so that they will produce a needed medicine.

In many humans, exposing the skin to sunlight over prolonged periods of time results in the production of more pigment by the skin cells (tanning). this change in skin color provides evidence that -

Asolution in which the salt concentration is higher outside the cell than the salt concentration inside the cell is called