Adolphin is living in a closed system consisting of a large aquarium, the dolphin, and its food. which method could be used to demonstrate the law of conservation of energy? a. measure the total energy in a dolphin, the aquarium, and the food fed to the dolphin every day for 30 days. then divide by 30 to find the average energy. b. measure the energy of the food, the dolphin, and the aquarium before feeding and after feeding. determine the difference to show that energy has changed forms. c. measure the total energy in a dolphin before feeding and after feeding. the difference represents energy that has been destroyed. d. measure the energy of the dolphin after feeding to show that energy has been created.

Dr. bad has developed a way to damage the atp-binding cassette transporter (abc transporter) on a cell. the cell's abc transporter can no longer bind and use atp when it's transporting substances. which of the following statements best describes how this damage would effect the transport of substances in the affected cell? (choice a) substances at a low concentration outside the cell would be more rapidly transported into the cell, where there is a high concentration. (choice b) substances at a high concentration outside the cell would not be transported into the cell, where there is a low concentration. (choice c) equilibrium would be established between all substances inside and outside of the cell. (choice d) substances at a low concentration outside the cell would not be transported into the cell, where there is a high concentration.

Which equation is used to calculate the magnetic force on a charge moving in a magnetic field

What would be the result if crossing over did not happen during meiosis in humans? a. there would be less genetic variation in humans. b. parents would be more likely to look like their children. c. the human population could not reproduce. d. children would have more chromosomes.