Which of the following investigators was/were responsible for the following discovery? in dna from any species, the amount of adenine equals the amount of thymine, and the amount of guanine equals the amount of cytosine. a) frederick griffith. b) alfred hershey and martha chase. c) oswald avery, maclyn mccarty, and colin macleod. d) erwin chargaff. e) matthew meselson and franklin stahl.

D) Erwin Chargaff.

Explanation:

answer: - few nutrients

high pressure

low temperatures

explanation: 1. few nutrients:   open-ocean zone is located way far from the land, which is the main source of the essential nutrients.2. high pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.3. ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface. 4. varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.5. low temperatures:   the temperature of open-ocean zone ranges from a low of -2°c to an average of 17°c

it's     c       this is a cell (b) with a nucleus (c) containing dna (a). the dna is organized into chromosomes (d). a section of the chromosome that codes for a trait is called a gene (e).