Problem: OPTIONS:
- proteins
- enzymes
- acids
- hormones
Q: Q: Virtually all of the effects of pregnancy can be attributed in some way to the influence of what? A:
Answer: hormones

Problem:OPTIONS:
- efficient composition
- unique composition
- complex composition
- variable composition

Q: Unlike pure substances, mixtures have a what? A:
****
A: variable composition

Q: What type of shape does a pelvic inlet have? A:
OPTIONS:
- cylindrical
- cubic
- conical
- oval shape
oval shape

Q: Inducible enzymes usually function in what type of pathways? A:
OPTIONS:
- enzymatic
- anabolic
- biogenic
- catabolic

Answer: catabolic

Question: Q: Attaching strips of neutral metals that are higher in the activity series can protect a structure from what? A:
OPTIONS:
- diffusion
- deoxidation
- weathering
- corrosion
Answer: corrosion

input: OPTIONS:
- helium
- magnesium
- barium
- hydrogen Now, answer this question: Q: What has the smallest, lightest atoms of all the elements and is colorless, odorless, tasteless and nontoxic, but highly flammable in its pure state? A:
A:
output:
hydrogen