Q: Traditionally, mammals were divided into groups based on what? Choices: - their sizes - their colors - their behaviors - their characteristics A:
their characteristics

Q: What do you call a reaction that consumes energy as it is carried out? Choices: - autotrophic - exothermic - unstable - endothermic A:
endothermic

Q: Q: Living organisms are made up of what type of carbon-based compounds? Choices: - microbial - biophysical - synthetic - biochemical A:
A: biochemical

Question: Q: The release of calcium ions initiates what? Choices: - exhalation - cramps - spasms - muscle contractions A:
Answer: muscle contractions

*Question*
Q: Which model helps explain molecules with double or triple bonds? Choices: - salinity model - reactivity model - particle model - hybridization model A:
**Answer**
hybridization model

(Question)
Q: What is defined in physics as the amount of force pushing against a given area? Choices: - energy - gravity - resistance - pressure A:
(Answer)
pressure