How can some water be used even if it isnt clean enough to drink

What is a gene ? a) a section of a protein that codes for dna. b) the alternate version of a trait. c) the visible trait in the f1 generation. d) a section of dna that codes for a specific trait .

When plants use sunlight to make food, the energy of sunlight is

Which process in respiration happens first? a)pyruvate processing b)electron transport chain c)krebs cycle d)glycolysis