Problem: OPTIONS:
- to feed their offspring
- to store food
- for protection against predators
- to reach the nectar at the bottom of flowers
Q: Q: Why do hummingbirds have long narrow bills? A:
Answer: to reach the nectar at the bottom of flowers
Problem: OPTIONS:
- carbon and oxygen
- phosphorus and oxygen
- nitrogen and argon
- nitrogen and oxygen
Q: Q: Which two gases make up the bulk of earth's atmosphere? A:
Answer: nitrogen and oxygen
Problem: OPTIONS:
- trophic
- graphic
- monophyletic
- prokaryotic
Q: Q: What type of cell has a singular chromosome, no nucleus, and few other organelles? A:
Answer:
prokaryotic