In an amusement park, the temperature of a track rises as a roller coaster moves downhill on it. Which statement best describes energy changes leading to this rise in temperature? A. Friction between the roller coaster’s wheels and the track causes kinetic energy to be transformed to thermal energy. B. The kinetic energy of the roller coaster is transformed to potential energy, which causes the temperature of the track to change. C. Friction between the roller coaster’s wheels and the track causes thermal energy to be transformed to kinetic energy. D. The thermal energy of the roller coaster is transformed to potential energy, which causes the temperature of the track to change.

Which type of bond forms between water moleculesstrong bondhydrogen bondcovalent bondpolar bond

Which of the following scenarios is an example of the bottleneck effect? answers a in south africa, much of the afrikaner population is descended from a small number of dutch colonists. in this population, this is an unusually high frequency of pseudoxanthoma elasticum (pxe), an elastic tissue disorder. b four white-tailed deer are introduced to a park in finland. thirty years after their introduction scientists compare the genes in the population and find that there is no variation. c during the industrial revolution, london's air became filled with soot. as a result, birds started eating more of the lighter moths because they were easier to spot than their darker counterparts. over time, the moth population changed so that there were more darker moths than lighter ones. d 10% of the population of american alligators in an area have the recessive trait albinism. a massive flood results in the death of 80% of the population. of the remaining population, 60% have the recessive trait of albinism.

Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?