The process that uses energy to move molecules or ions across a concentration gradient from an area of lower concentration to an area of higher concentration is called

Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work)

Ascientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas which group of statements best describes all of the materials he is using in the investigation?

What advantages does a pedigree have over a written passage?