Amino acid supplements are advertised to enhance performance in various groups of athletes. Based on the available research data, which of the following statements is FALSE concerning their effectiveness in this regard?a) arginine and ornithine are used to stimulate the release of human growth hormone, but research is generally not supportive of an ergogenic effectb) L-tryptophan has been shown to enhance performance in one study, but more recent data with better study designs have shown that L-tryptophan is not an effective ergogenicc) some well controlled research with aspartates has shown some possible beneficial effects, but more research is needed for confirmationd) BCAA supplementation in theorized to be beneficial in prolonged endurance events, but more research is needed for confirmation, especially with chronic supplementatione) Although not an essential amino acid, research conducted at Old Dominion University has shown inosine to be an effective ergogenic for aerobic endurance events

3what is the range of the function shownin the graph? ucation solutionsnw novo-9-8-7 -6 -5 -4 -3 -2 -1123456789

Archeologists have discovered three sites showing conclusive evidence for the mastery of fire in tanzania, from a period slightly after the time that homo habilis was present in africa. these sites clearly were founded by homo erectus, the descendent species of homo habilis that migrated north, out of africa and into asia. homo erectus was known to have mastered fire, from ample evidence at sites in asia. there is no reason to attribute mastery of fire to homo ergaster, the descendent species of homo habilis that remained in africa. which of the following is an assumption on which the argument depends? (a) before their migration, homo erectus occupied african territory as far south as tanzania.(b) the strain of migration provided the selective pressure motivating homo erectus‘ mastery of fire.(c) homo ergaster would not have derived as much benefit from the mastery of fire as did homo erectus.(d) homo ergaster inherited all cultural knowledge from homo habilis, a species that did not have mastery of fire.(e) homo ergaster did not occupy regions as far south as tanzania until well after the time of these three sites.

How do temperature and salinity affect deepwater currents? question 15 options: as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.