input with options: Q: What is the only commercial way of reproducing plants such as orchids? A:
OPTIONS:
- sexual reproduction
- cross-breeding
- grafting
- cloning
output: cloning

Q: Q: What is the leading cause of death worldwide? A:

OPTIONS:
- lung disease
- cancer
- liver failure
- coronary artery disease

A: coronary artery disease

input: OPTIONS:
- underwater volcanoes
- tsunamis
- earthquakes
- new oceanic crust Now, answer this question: Q: What forms in the ocean from the seafloor spreading? A:
A:
output: new oceanic crust

Q: What is the term for a symbiotic relationship in which one species benefits while the other species is not affected? A:

OPTIONS:
- parasitism
- mutualism
- pollenation
- commensalism

Answer: commensalism

Problem: OPTIONS:
- parent trait
- major trait
- maladaptive trait
- polygenic trait
Q: Q: Natural selection for what type of trait changes the distribution of phenotypes? A:
Answer: polygenic trait

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:

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

Answer:
molecular mass