Protein is used to repair cells by the human body, and most foods contain protein. Given these facts, what is used to repair cells in the human body among the following options: - DNA  - food  - PDAs  - fibers  - fats  - copper  - corn  - RNA
food

Earthworms are important deposit feeders that help form and enrich soil, and deposit feeders ingest sediment and extract food particles. Given these facts, earthworms ingest sediment and extract what from soil among the following options: - Organic compounds  - harmful substances  - Energy.  - food ingredients  - h2o  - bioaerosols  - food particles  - carbon
food particles

Q: Temperature falls from lower to higher altitudes, and temperatures are cooler in the higher altitudes of the mountains. Given these facts, temperature falls from lower to higher where among the following options: - space  - burning coal  - underground  - mountains  - frontal zones  - the ground  - deserts  - burrows
A: mountains

Question: Migrants typically travel long distances, and manatees are a migrant species. Given these facts, what do manatees do among the following options: - migrate  - reproduce  - play games  - stagnate  - survive  - Catch prey  - vocalizing  - burrow
Answer: migrate

*Question*
Sound can be used for communication by animals, and sound Sound waves are mechanical waves. Given these facts, what can be used for communication by animals among the following options: - books  - Electrical energy  - electromagnetic energy  - nails  - chemical messengers  - mechanical waves  - encoded information  - ice
**Answer**
mechanical waves

(Question)
Hormones are chemical messengers that control many body functions, and and like other downers, it slows bodily functions, including breathing and heart rate. Given these facts, what do hormones control among the following options: - Most plants  - Plants growth  - rocks  - movement  - trees  - Heart rate  - moon  - athletes
(Answer)

Heart rate