Q: What does the esophagus connect to at its bottom end? Choices: - the colon - the larynx - the large intestine - the stomach A:
the stomach

Q: Acting like drawstrings to close off the alimentary canal, what regulates the passage of material between compartments? Choices: - intestine - hamstring - uterus - sphincter A:
sphincter

Q: Q: What planet is the easiest to observe? Choices: - mercury - pluto - uranus - mars A:
A: mars

Question: Q: Specialized features of populations of galapagos finches inspired what theory? Choices: - evolution by isolation - evolution by force - evolution by reaction - evolution by natural selection A:
Answer: evolution by natural selection

*Question*
Q: When egg laying and mating occur together, as in external fertilization, the certainty of what is high? Choices: - germination - survival - high reproduction rate - paternity A:
**Answer**
paternity

Q: Q: Acids are the opposites of what? Choices: - water - solids - gas - bases A:
A: bases