Q: Spiders use the hydrostatic pressure generated by an open type of what anatomical system to extend their legs? Choices: - respiratory - pulmonary - vascular - circulatory A:
circulatory

Q: What is the force that pulls downward on an object and is measured by weight? Choices: - strength - work - light - gravity A:
gravity

Q: Q: What still causes fatal lung disease in nonsmokers? Choices: - nicotine - chewing tobacco - alcohol - tobacco smoke A:
A: tobacco smoke

Question: Q: Insects are arthropods in which class? Choices: - lexapoda - trichina - xerophyte - hexapoda A:
Answer: hexapoda

*Question*
Q: Who wrote the book, on the origin of species? Choices: - Scopes - Sagan - shaw - darwin A:
**Answer**
darwin

Q: What is the term for how the air feels at its temperature and humidity Choices: - climate sensory index - atmospheric humidity - initial humidity - relative humidity A:
relative humidity