This document includes questions and answers that pertain to the ARPA-E Funding Opportunity Announcement (FOA) entitled "Solicitation on Topics Informing New Program Areas DE-FOA-0001953 Topic J - Biotechnologies to Ensure a Robust Supply of Critical Materials for Clean Energy".  The full solicitation on Topics Informing New Program Areas FOA and additional information can be found on the ARPA-E Funding Opportunity Exchange website (https://arpa-e-foa.energy.gov).