input: OPTIONS:
- egg
- nucleus
- uterus
- embryo Now, answer this question: Q: During the first several weeks of development, the cells of the endometrium nourish what? A:
A:
output: embryo

Q: What do fission reactors use to slow down the neutrons? A:

OPTIONS:
- inertia
- brake
- control
- moderator

Answer: moderator

Problem: OPTIONS:
- naturally decay
- explosive decay
- fusion decay
- radioactive decay
Q: Q: When an unstable nucleus emits radiation and is transformed into the nucleus of other elements this is called? A:
Answer: radioactive decay

Problem:OPTIONS:
- destroy blood
- use blood
- make blood
- pump blood

Q: What does the human heart do? A:
****
A: pump blood

Q: Rh antibodies can prove dangerous if they cross what barrier in pregnancy? A:
OPTIONS:
- stomach
- fungal
- embryo
- placental
placental

Q: Through which part of the body do most animals take in oxygen? A:
OPTIONS:
- ears
- rectum
- nose
- mouth

Answer:
mouth