Q: Hair and nails are made of what? Choices: - chromatin - proteins - cellulose - keratin A:
keratin

Q: What kind of fats have been implicated in the presence of heart disease? Choices: - plant fats - animal fats - key fats - trans fats A:
trans fats

Q: Q: Fish are a diverse and interesting group of organisms in what sub-phylum? Choices: - mammals - invertebrates - organelles - vertebrates A:
A: vertebrates

Question: Q: What characteristic of reptile eggs allows them to be laid on land instead of in water? Choices: - they are dry - they trap gas - they are circular - they are amniotic A:
Answer: they are amniotic

*Question*
Q: What are microscopic vessels with very thin, porous walls? Choices: - veins - arteries - valves - capillaries A:
**Answer**
capillaries

Q: What slow process is required for formation of soil? Choices: - leaching - digestion - fossilization - weathering A:
weathering