question: What can volcanic ash in the atmosphere do to natural ecosystems?
choices.text: Create wealth negative feedback rapid changes occur Major effects erosion No effect Forest fire Start engines
choices.label: A B C D E F G H
fact2: Small temperature variations can have major effects on natural ecosystems.
combinedfact: volcanic ash in the atmosphere can have major effects on natural ecosystems
formatted_question: What can volcanic ash in the atmosphere do to natural ecosystems? (A) Create wealth (B) negative feedback (C) rapid changes occur (D) Major effects (E) erosion (F) No effect (G) Forest fire (H) Start engines