Q: What results from the evaporation of sea water? Choices: - carbon-di-oxide - reef - oxygen - salt A:
salt

Q: The heme parts of a hemoglobin molecule bind with what element? Choices: - hydrogen - carbon - nitrogen - oxygen A:
oxygen

Q: Q: Clearing land for agriculture and development is a major cause of what negative result? Choices: - water destruction - human destruction - mineral destruction - habitat destruction A:
A: habitat destruction

Question: Q: Both fluorine and lithium are highly reactive elements because of their number of what? Choices: - shell electrons - positrons - covalence electrons - valence electrons A:
Answer: valence electrons

*Question*
Q: What is the term for the exchange of genetic material between non-sister chromatids of homologous chromosomes? Choices: - inheritance - asexual reproduction - meiosis - crossing-over A:
**Answer**
crossing-over

(Q).
Q: What causes oxides to decompose? Choices: - humidity - acidity - precipitation - heat A:
(A).
heat