Q: What makes echinoderms force water into the feet and move forward? Choices: - spring contractions - vacuum contractions - field contractions - muscle contractions A:
muscle contractions

Q: What technology do scientists use to create models? Choices: - calculators - patterns - microscopes - computers A:
computers

Q: Q: How do invertebrates reproduce? Choices: - randomly - constantly - asexually - sexually A:
A: sexually

Question: Q: What do farmers use greenhouses for? Choices: - to predict the growing season - to allow the growing season - to decrease the growing season - to extend the growing season A:
Answer: to extend the growing season

*Question*
Q: What is the concept by which two species within the same area to coexist by adapting by developing different specializations? Choices: - character development - feature displacement - character concept - character displacement A:
**Answer**
character displacement

(Q).
Q: What disease refers to the dangerous buildup of fatty materials in blood vessels? Choices: - gout - fibrosis - arthritis - atherosclerosis A:
(A).
atherosclerosis