Q: Each microspore develops into a pollen grain containing a male what? Choices: - progesterone - zygote - sperm - gametophyte A:
gametophyte

Q: What is polyisoprene better known as? Choices: - rayon - styrofoam - silicon - rubber A:
rubber

Q: Q: Temperature is a measure of the motion (kinetic energy) of what? Choices: - particles - nucleus - electrons - molecules A:
A: molecules

Question: Q: What are the two ways animals can manage their internal environment? Choices: - digestion or excretion - sweating or sleeping - adaptation or mutation - regulating or conforming A:
Answer: regulating or conforming

*Question*
Q: What is the cause of the "heartburn" that occurs when acidic digestive juices escape into the esophagus? Choices: - toxic reflux - acidic buildup - acid pressure - acid reflux A:
**Answer**
acid reflux

*Question*
Q: Melting ice cubes and freezing water are examples of change of what? Choices: - volume - role - role - state A:
**Answer**
state