In a convection current, why does cool air take the place of warmer air? a. cool air is less dense than warm air, so it sinks to take the place of rising warm air. b. cool air is denser than warm air, so it sinks to take the place of rising warm air. c. cool air is less dense than warm air, so it rises to take the place of sinking warm air. d. cool air is denser than warm air, so it rises to take the place of sinking warm air. this is science

Select all that apply. a beta particle: is electromagnetic energy is an electron has zero charge is emitted from the nucleus has a +2 charge has a -1 charge

In an exothermic reaction the bonding energy of the product is: less than the reactants same as the reactants greater than the reactants dependent upon the presence of a catalyst

Effect of rotenone and antimycin a on electron transfer rotenone, a toxic natural product from plants, strongly inhibits nadh dehydrogenase of insect and fish mitochondria. antimycin a, a toxic antibiotic, strongly inhibits the oxidation of ubiquinol. (a) explain why rotenone ingestion is lethal to some insect and fish species. (b) explain why antimycin a is a poison. (c) given that rotenone and antimycin a are equally effective in blocking their respective sites in the electron-transfer chain, which would be a more potent poison? explain.