Problem: OPTIONS:
- One Chamber
- four chambers
- eight chambers
- three chambers
Q: Q: Like all tetrapods except birds and mammals, frogs possess a heart with what structure? A:
Answer: three chambers

Problem:OPTIONS:
- genes
- carbohydrates
- hormones
- enzymes

Q: What do organisms need to speed up biochemical reactions? A:
****
A: enzymes

Q: Antibodies also mark pathogens for destruction by which cells? A:
OPTIONS:
- interferons
- leukocytes
- platelets
- phagocytic
phagocytic

Q: Hydropower is generated with what natural resource? A:
OPTIONS:
- light
- air
- fire
- water

Answer: water

Question: Q: Which are the closest living relations to land plants? A:
OPTIONS:
- mammals
- arthropods
- sporozoans
- charophytes
Answer: charophytes

input: OPTIONS:
- air currents
- air movement
- current pressure
- air pressure Now, answer this question: Q: What affects how high a cake rises when it bakes? A:
A:
output:
air pressure