input: OPTIONS:
- Mutations
- rays or beams
- Genes
- radiation
- DNA
- Smoking
- Microscope
- Chemicals Now, answer this question: You are presented with the quiz "What can change the structure of DNA?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "mutations may change the structure of a chromosome or just change a single nucleotide" and "dNA is made up of nucleotides". So, what's the best answer to the question?
A:
output: Mutations
You are presented with the quiz "most what grow roots into the soil to absorb inorganic elements?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "most plants grow roots down into the soil to absorb water and minerals" and "minerals Minerals are inorganic elements". So, what's the best answer to the question?

OPTIONS:
- bees
- Conifers
- burrs
- rose petals
- grass
- soil
- Trees
- plants

Answer: plants
Problem: OPTIONS:
- produce offspring
- ejaculated during reproduction
- implanted and swabbed
- allow growth
- mate with females
- implanted in the uterus
- implanted in the cheek
- more abundant
Q: You are presented with the quiz "Sperm had to swim from male to female reproductive organs to be what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "sperm had to swim from male to female reproductive organs for fertilization" and "if fertilized, the egg implants itself in the uterus". So, what's the best answer to the question?
Answer: implanted in the uterus
Problem:OPTIONS:
- barnacles
- refraction of light
- layers of fat
- Epidermis
- tough membranes
- ocean water
- gastropod shells
- epidermis and dermis

You are presented with the quiz "Sea creatures encased by what reproduce sexually?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "tunicates reproduce sexually" and "tunicates are sea creatures encased by tough membranes, reminiscent of tunics". So, what's the best answer to the question?
****
A: tough membranes
You are presented with the quiz "Bears are proportionally weighted on a balance for discovering what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "abalance is used for measuring mass of an object" and "bears are proportionally weighted for use on a balance for measurement discoveries". So, what's the best answer to the question?
OPTIONS:
- size
- traits
- mass
- age
- energy
- forces
- SNPs
- shape
mass
You are presented with the quiz "Most carcinogens cause cancer by producing changes in what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "most carcinogens cause cancer by producing mutations in DNA" and "mutations are changes in the DNA sequence". So, what's the best answer to the question?
OPTIONS:
- harmful substances
- Chlorophyll
- the skin
- the eyes
- organs
- layers of fat
- DNA sequence
- alleles

Answer:
DNA sequence