Ques: Q: What are the newest, outer layers of secondary xylem called? Choices: - bark - fibrous - vascular - sapwood A:
Ans: sapwood

Ques: Q: What are broad explanations that are widely accepted as true? Choices: - scientific experiments - informal theories - scientific hypotheses - scientific theories A:
Ans: scientific theories

Ques: Q: What are the contacts between neurons called? Choices: - neurapses - impulses - electrodes - synapses A:
Ans: synapses

Ques: Q: What is the term for protists that produce spores, such as the toxoplasm? Choices: - protozoans - spermatozoa - newborns - sporozoans A:
Ans:
sporozoans