Owls eat voles (a relative of mice); voles eat grass and seeds. Which food chain is correct?
A. Grass → Vole → Owl
B. Grass → Owl → Vole
C. Vole → Owl → Grass
D. Vole → Grass → Owl

A.

Explanation:

Grass is a primary producer, and must be the first to be eaten on the very left.  Owls are the predator, and must not be eaten on the very right.  Thus, A is the only correct choice.

emerging idea only occurs as a raw idea that could appear out of nowhere. meanwhile, to reach scientific consensus , that idea must be structured and tested over and over again through various experiments. the scientific consensus transforms the raw idea into idea that is more reliable through the process of scientific elimination.