Which of the following is the best example of chemical weathering? a Limestone rocks dissolving in water

b Plant roots growing through concrete and cracking it

c Waves carrying sand away from a beach

d A large rock splitting into pieces because of ice

Explain that newton first law,second law and third law of motion?

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.

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.