Question: If bears enter a deep sleep to conserve energy, then why do bears enter a deep sleep? Answer choices: - Thyroid-stimulating hormone - prolactin release - chemical messengers - They can't live in the cold - To get some rest - To conserve energy - Endocrine system - They don't like the winter
Answer: To conserve energy

Question: If using a bike saves energy, then riding a bike reduces what? Answer choices: - energy usage - Greenhouse gasses - acid rain - harmful substances - Greenhouse gases - temperature - prolactin release - storms
Answer: energy usage

Question: If insects lack a vertebral column, then what lack a vertebral column? Answer choices: - Conifers - vertebrates - ferns - sharks - humans - insects - cacti - fish
Answer:
insects