Q: The diatoms are unicellular photosynthetic protists that encase themselves in intricately patterned, glassy cell walls composed of silicon dioxide in a matrix of organic particles. these protists are a component of freshwater and these? A:

OPTIONS:
- waste plankton
- land plankton
- source plankton
- marine plankton

Answer: marine plankton

Problem: OPTIONS:
- pink chloride
- yellow chloride
- lead chloride
- silver chloride
Q: Q: What type of chloride is a non-volatile material, but does not dissolve in water? A:
Answer: silver chloride

Problem:OPTIONS:
- open space
- instead space
- normal space
- empty space

Q: The volume of a gas is comprised of about 10% matter. what is the rest? A:
****
A: empty space

Q: Why does the fish odour diminish when you put lemon juice over cooked fish? A:
OPTIONS:
- due to oxidation
- due to evaporation
- due to acidification
- due to neutralization
due to neutralization

Q: When can mutations occur in genes? A:
OPTIONS:
- after rna replication
- after dna replication
- during rna replication
- during dna replication

Answer: during dna replication

input with options: Q: Ionic bonds between two atoms require one metal and one what? A:
OPTIONS:
- liquid
- gas
- metallic
- nonmetal
output:
nonmetal