*Question*
Q: What branch of biology uses fossils to study life's history? Choices: - morphology - entomology - gerontology - paleontology A:
**Answer**
paleontology

*Question*
Q: What encloses the border of animal cells? Choices: - Jacket membrane - dust membrane - cells membrane - plasma membrane A:
**Answer**
plasma membrane

*Question*
Q: What is an electrically neutral compound with positive and negative ions? Choices: - correlated compound - isotope - neutralized molecule - ionic compound A:
**Answer**
ionic compound

*Question*
Q: Herbivores and the bacteria that live in their intestines demonstrate a two-way beneficial relationship called what? Choices: - parasitism - pragmatism - syncretism - mutualism A:
**Answer**
mutualism