Trey is conducting an experiment to determine which fish food causes the most goldfish activity over a period of two weeks. he is going to set up ten fish tanks with 4 goldfish each. he will feed the fish in half of the tanks swift salmon food and the fish in the other half of the tanks fast flounder food. he will expose them to direct sunlight for 4 hours per day. each tank will have the same size and type of goldfish, which will be fed the same amount of fish food. each tank will be filled with the same type and amount of water and with the same type and amount of river rock.

i don't think the actual question was made clear in the text. would you be able to rewrite it but including the question? i could see if i can you then : )

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.