Which of the following benefits from biodiversity would be categorized as an ecosystem service? ...

Which of the following benefits from biodiversity would be categorized as an ecosystem service?
 
  a. anticancer drug Taxol, derived from the yew tree
  b. plants and fruits that are edible by humans
  c. cotton and other useful plant-derived fibers
  d. decomposition of wastes
  e. wild organisms as a source of genes for genetic engineering

Question 2

The genes of teosinte, a wild relative of corn, were used in crossbreeding with domestic corn in an
  attempt to produce a ____ variety.
 
  a. herbicide resistant
  b. pest resistant
  c. high lysine
  d. perennial
  e. higher yielding