*Question*
Q: Most oxygen in blood is bound to a protein called what, and carried to the tissues? Choices: - platelete - hydrogen - plasma - hemoglobin A:
**Answer**
hemoglobin

*Question*
Q: What protective substance covers the skin of most reptiles? Choices: - hairs - feathers - pores - scales A:
**Answer**
scales

*Question*
Q: What is the term of a phase change if solid water has it's average kinetic energy increased to change it to liquid water? Choices: - boiling - freezing - evaporation - melting A:
**Answer**
melting

*Question*
Q: The german physicist max planck (18581947) used the idea that atoms and molecules in a body act like oscillators to absorb and emit this? Choices: - blood - energy - convection - radiation A:
**Answer**
radiation