Aremote control only works when it is pointed at the television. what is the best explanation for this? a) the remote control has a weak signal and will only work over short distances. b) the remote control transmits information at the speed of light to the television. c) the remote control transmits information that is encoded and the television decodes it. d) the remote control transmits information through waves, such as infrared waves, to the television.

Using the periodic table, determine which material is most likely a good conductor

Which would happen if more forests were cut down? a. the nitrogen cycle would be stopped b. nitrogen would be fixed by bacteria more quickly c. the amount of co2 in the atmosphere would increase d. fossil fuels would build up in the soil c the amount of co2 in the atmosphere would increase

What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.