(PLEASE ANWSER FAST) How does the author use descriptions to convey the end result of the competition between silent movies and talking movies?
OA.
It demonstrates how worldwide trends influence movies.
OB.
It demonstrates how both products have similar features.
OC. It demonstrates how a new technical method with better features is typically more popular.
OD. It demonstrates how consumers were unable to decide which style of moviemaking was superior.

*will mark brainliest for first correct answer* which of the following is most likely to affect the biodiversity of a park ecosystem? a. less rain than usual for several months b. ongoing pollution from a nearby factory c. park rangers plant a new type of tree d. disease wipes out an entire population

You have a solution that contains phospholipid vesicles in a test tube. these vesicles have phospholipid bilayers, but do not contain any membrane transporters. you add a number of different molecules to the solution, and wait a period of time for them to equilibrate. if you could measure the concentration of each molecule, for which of the following would you expect to measure equal concentrations inside and outside of the vesicles? assume for this question that the overall osmolarity inside and outside the vesicles is the same (that is, there is no appreciable diffusion of water across the membrane). (select two answers) an amino acid with a hydrophobic side-chain a small non-polar molecule a negatively charged ion a small polar molecule a small lipid hormone

An easy way to calculate the amount of energy available at each level is to what?