Select your answer:

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Microbial Growth & Nutrition › ViewMicroorganisms that take up carbon (a chemical) from their organic energy source (fats, carbs, proteins).
A. Chemoautotrophs
B. Heterotrophs
C. Chemoheterotrophs
D. Photoautotrophs
Nervous System › View
What is the best way for your brain to make new connections?
A. Surgery
B. Shoving information into your ears
C. Trying hard and learning new things
D. Sleeping