Q: Elements with magic numbers of what tend to have more stable isotopes? Choices: - nucleus - pressure - molecules - protons A:
protons

Q: What is the organ that senses sound? Choices: - nose - eye - skin - ear A:
ear

Q: Q: As the temperature of water decreases what happens to the speed of the water molecules? Choices: - move faster - evaporate - begin to boil - slow down A:
A: slow down

Question: Q: How many pathways do plants have for carbon fixation? Choices: - one - four - two - three A:
Answer: three

*Question*
Q: The size and symmetry of a beetle's or an elk's antlers or a grasshopper's song communicate rather clearly their state of what? Choices: - society - problem - need - health A:
**Answer**
health

(Q).
Q: How is a reaction described when the given conditions favor formation of products? Choices: - instantaneous - fluctuations - planned - spontaneous A:
(A).
spontaneous