Problem:OPTIONS:
- mass effect
- fractional mass
- magnetic mass
- molecular mass

Q: What is calculated by adding together the atomic masses of the elements in the substance, each multiplied by its subscript (written or implied) in the molecular formula? A:
****
A: molecular mass

Q: Uranium is an example of a non-renewable resource used to produce what type of power? A:
OPTIONS:
- water
- wind
- electrical
- nuclear
nuclear

Q: During the first several weeks of development, the cells of the endometrium nourish what? A:
OPTIONS:
- egg
- nucleus
- uterus
- embryo

Answer: embryo

Question: Q: What element is a biochemical compound based on? A:
OPTIONS:
- hydrogen
- nitrogen
- oxygen
- carbon
Answer: carbon

input with options: Q: What occurs when muscle fibers get shorter? A:
OPTIONS:
- muscle extension
- muscle tension
- muscle diffusion
- muscle contraction
output: muscle contraction

Problem: OPTIONS:
- electric lines
- agricultural equipment
- manufacturing industry
- burning fossil fuels
Q: Q: What is the major cause of outdoor air pollution? A:
Answer:
burning fossil fuels