*Question*
Q: What system consists of all the muscles of the body? Choices: - vascular - digestive - endocrine - muscular A:
**Answer**
muscular

*Question*
Q: Vascular plants evolved what basic structures to collect sunlight? Choices: - flowers - stems - roots - leaves A:
**Answer**
leaves

*Question*
Q: What does the base of a nucleotide within dna consist of? Choices: - ribosomes - protein - hydrogen - nitrogen A:
**Answer**
nitrogen

*Question*
Q: The process when heat is released is referred to as what? Choices: - geothermal - endothermic - insular - exothermic A:
**Answer**
exothermic