Which human action would most likely increase the nutrients in an ecosystem? A. building a rock wall
B. fertilizing a cornfield
C. watering a flower bed
D. pulling weeds from a garden

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

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.