Fact 1: Roots have primary and secondary meristems for growth in length and width. Fact 2: Special types of primary roots are tap roots or turnips. Given the two facts above, answer the question "What do turnips use to grow in length and width?" with the following options: - epidermal - light energy - Energy. - bacteria - meristem - fungi - viruses - Energy
meristem

Fact 1: Aplant requires sunlight to grow. Fact 2: Plants to avoid are fast-growing vines that can take over an area in no time. Given the two facts above, answer the question "What requires sunlight in order to take over an area?" with the following options: - spores - fish - plants - humans - pods - Oak - opossums - coral
plants

Q: Fact 1: Ice wedging is when ice causes rocks to crack by expanding in openings. Fact 2: Ice wedging is the most important form of mechanical weathering. Given the two facts above, answer the question "When ice causes rocks to crack by expanding in openings, what is this called?" with the following options: - In the winter - smoking - icing - fissures of hot, acidic water - mechanical weathering - graptolites - Inches or fractions of inches. - rocking
A: mechanical weathering

Question: Fact 1: Hearing is used for sensing sound by animals. Fact 2: By nature, dogs are pack animals. Given the two facts above, answer the question "How do dogs sense sound?" with the following options: - Heart rate - observe it - sight - hormones - waves - touch - hearing - smell
Answer: hearing

*Question*
Fact 1: Breaking apart rocks can cause debris. Fact 2: Erosion is the breaking apart and moving of rocks and soil. Given the two facts above, answer the question "What can break rocks and cause debris?" with the following options: - sand - trees - erosion - wind - Surf - Earthworms - flooding - rivers
**Answer**
erosion

Fact 1: Burning wood is used to produce heat. Fact 2: Air pollution is created by burning. Given the two facts above, answer the question "What causes air pollution?" with the following options: - Smoking - cigarettes - producing heat - Electrical energy - oxygen - chemical reaction - wind turbines - clouds
producing heat