If trash has a negative impact on the environment, then what has a negative impact on the environment? Answer choices: - trash - wind - disease - recycling - carbon offsets - mines - deserts - nature
trash

If plants shed their leaves in the dry season each year, then plants shed their leaves in what season each year? Answer choices: - spring season - wet season - firing season - Summer - When it's cold - colder weather - Winter - dry season
dry season

Q: If biofuel is used to produce energy, then what is biofuel used to produce? Answer choices: - disease - chemicals - waste - bamboo - engines - sleep - energy - food
A: energy

Question: If hydrogen bonds cause water to expand as it becomes ice, then what causes water to expand as it becomes ice? Answer choices: - evaporation - wind - Weathering - heat - gasoline - Generating heat - friction - hydrogen bonds
Answer: hydrogen bonds

*Question*
If waves cause contact between rocks, then what causes contact between rocks? Answer choices: - wind - heat - erosion - deltas - waves - motion - seasons - rivers
**Answer**
waves

Q: If many trees respond to the days growing shorter in the fall, then when do many trees respond to the days growing shorter? Answer choices: - air cools - Winter - wind - in fall - in summer - autumn - late winter - in spring
A: in fall