input: OPTIONS:
- amphibians
- reptiles
- birds
- mammals Now, answer this question: Q: Monotremes, marsupials, and placental mammals are subclasses of what? A:
A:
output: mammals

Q: Water is formed from oxygen and what other element? A:

OPTIONS:
- calcium
- helium
- lead
- hydrogen

Answer: hydrogen

Problem: OPTIONS:
- physical transport
- impassive transport
- immune transport
- passive transport
Q: Q: What term describes a way that small molecules or ions move across the cell membrane without input of energy by the cell? A:
Answer: passive transport

Problem:OPTIONS:
- stratosphere
- exosphere
- troposphere
- ionosphere

Q: Greater reflection off what atmospheric layer allows am radio waves to travel even farther at night than they can during the day? A:
****
A: ionosphere

Q: During fetal development of the heart, what does the bulbus cordis develop into? A:
OPTIONS:
- right atrium
- last ventricle
- left atrium
- right ventricle
right ventricle

Q: Refracting and reflecting telescopes are optical telescopes that use lenses to gather what? A:
OPTIONS:
- electricity
- magnetic force
- sound
- light

Answer:
light