If carbon may be stored in marble for years, then carbon may be stored in what for years? Answer choices: - marble - peat - black holes - coal - bricks - wetland - dogs - fossils
marble

If competition can result in bullying, then what can lead to bullying? Answer choices: - Cooperation - Isolation - Damaged hearing - Perfection - Competition - negative - smoking tobacco - heat or cold
Competition

If apan is used to keep food warm or to heat it up, then awhat is used to keep food warm or to heat it up? Answer choices: - heat - gas - pan - foil - freezer - fur - bag - jacket
pan

If most ecosystems need plants, then most ecosystems need what? Answer choices: - invasive species - water - insects - food - tornadoes - recycling - plants - scientists
plants