Q: What is the smallest unit of a chemical element called? Choices: - cell - droplet - nucleus - atom A:
atom
------
Q: Do most humans feed at one trophic level, or more than one? Choices: - less than one - one - none - more than one A:
more than one
------
Q: Partially decayed remains of plants and animals form the organic portion of what? Choices: - minerals - nutrients - grasses - soil A:
soil
------
Q: Fertilization occurs if a sperm enters the egg while it is passing through what tube? Choices: - ovarian - anterior - vaginal - fallopian A:
fallopian
------