If plant reproduction requires insects and hummingbirds, then insects and hummingbirds are required for what to reproduce? Answer choices: - fish - bees - herds - growth - courtship - plants - mating - nutrients
plants

If cells that secrete hormones travel throughout the body in blood, then cells that secrete hormones travel throughout the body in what? Answer choices: - skin - deltas - blood - atoms - waves - sleep - genes - breathe
blood

Q: If carbon may be stored in limestone for millions of years, then what may be stored in limestone for millions of years? Answer choices: - dark matter - chemicals - still-living organisms - nothing - fossils - matter - carbon - Energy
A: carbon

Question: If plants need the sun to grow, then what do plants need to grow? Answer choices: - the sun - nutrients - body water - food - seeds - Earthworms - sunlight - hormones
Answer: the sun

*Question*
If sand is formed by weathering, then what process creates sand? Answer choices: - Water expanding - beach - evaporation - friction - silicon dioxide - weathering - dunes - rainfall
**Answer**
weathering

If eggs need to incubate to survive, then eggs need to incubate to what? Answer choices: - complete - mitosis - be fertilized - produce nutrients - be eaten - Winter - survive - sunlight
survive