Problem: OPTIONS:
- univalent compound
- phenotype compound
- duality compound
- covalent compound
Q: Q: What is formed when atoms of different elements bond together? A:
Answer: covalent compound

Problem:OPTIONS:
- visible energy flow
- coolant energy flow
- spectral energy flow
- thermal energy flow

Q: A refrigerator must do work to reverse the normal direction of what? A:
****
A: thermal energy flow

Q: Our digestive system breaks down starch to what? A:
OPTIONS:
- Salts
- Waste
- pattern sugars
- simple sugars
simple sugars

Q: What kind of islands provide natural protection to shorelines? A:
OPTIONS:
- patch islands
- locational islands
- edge islands
- barrier islands

Answer: barrier islands

Question: Q: What are the 3 orders of amphibians? A:
OPTIONS:
- bees, caddisflies, antilions
- monotremata, artiodactyla, rodentia
- hagfish, lampreys, acanthodii
- frogs, salamanders, caecilians
Answer: frogs, salamanders, caecilians

input: OPTIONS:
- descendant
- biochemical
- intrinsic
- genetic Now, answer this question: Q: What code is the same in all living things and shows that all organisms are related by descent from a common ancestor? A:
A:
output:
genetic