A cup of hot chocolate that has been stirred with a spoon. Which statement describes how heat flows from the coffee to the part of the spoon in the coffee? Heat flows from the coffee to the spoon through radiation. Heat flows from the coffee to the spoon through convection. Heat flows from the coffee to the spoon through conduction. Heat flows from the coffee to the spoon through radiation, convection, and conduction.

Imagine that you have produced several versions of lactase, each of which differs from normal lactase by a single amino acid. describe a test that could indirectly determine which of the versions significantly alters the three-dimensional shape of the lactase protein.

From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor

15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.