Replies to: What does credit hours mean? A class is usually 3 to 5 credit hours, which roughly refers to the number of hours of lecture per week. For example, a 3-hour class would meet MWF for 50 minutes or TuTh for one hour and 15 minutes. A 5-hour class might meet everyday for 50 minutes, e.g. foreign languages.
The answer is not as complicated as some people may think and yet the method is very effective, even fatal to the predator at times. All jellyfish have tentacles which they use to not only navigate and sometimes swim depending on the species but to also protect themselves from harm.These tentacles are used by the jellyfish to sting those who are preying on them.he answer is not as complicated as some people may think and yet the method is very effective, even fatal to the predator at times. All jellyfish have tentacles which they use to not only navigate and sometimes swim depending on the species but to also protect themselves from harm.
The jellyfish sting actually comes from tiny nematocysts, or stinging cells, on the jellyfish body. When triggered, these cells eject poison-tipped barbs that help the jellyfish catch food in the ocean.The nematocysts can still release their sting even after the jellyfish is dead.he jellyfish sting actually comes from tiny nematocysts, or stinging cells, on the jellyfish body. When triggered, these cells eject poison-tipped barbs that help the jellyfish catch food in the ocean.