A dung beetle is an insect that gathers waste from animals, rolls it into a compact ball, lays eggs in it, and buries it in the soil. This gives the eggs a warm, safe place to hatch and provides a food source for the developing larvae. Which impact does the dung beetle most likely have on its ecosystem? OPTIONS:
- It helps return nutrients to the soil.
- It makes animal waste harder to degrade.
- It causes an unhealthy accumulation of animal waste.
- It depletes nutrients from the soil to benefit its young.
A: It helps return nutrients to the soil.

When would the highest tides occur along the Texas coast? OPTIONS:
- at sunrise
- at sunset
- during a full moon
- during a half moon
A: during a full moon

Which object used in an experiment can safely be recycled? OPTIONS:
- an aluminum can
- a wet paper towel
- salt spilled onto a tabletop
- a broken graduated cylinder
A: an aluminum can

When animals use energy, they produce OPTIONS:
- nitrogen
- iron sulfide
- oxygen
- carbon dioxide
A:
carbon dioxide