Q: Mammals belong to which class of vertebrates? Choices: - agnathas - chondrichthyes - placoderms - endothermic A:
endothermic

Q: In mammals, what layer protects the egg? Choices: - Choloza - Germinal Disc - Albumen - zona pellucida A:
zona pellucida

Q: Q: What is the term for the spacing of individuals within a population? Choices: - suspension - equilibrium - population density - dispersion A:
A: dispersion

Question: Q: What bonds form when pairs of electrons are shared? Choices: - ionized bonds - neutron bonds - dissonance bonds - covalent bonds A:
Answer: covalent bonds

*Question*
Q: A unique type of organism is also known as what? Choices: - taxonomy - parasites - element - species A:
**Answer**
species

*Question*
Q: Triploblasts include a broad range of animals, from flatworms to arthropods to what? Choices: - cells - mammals - invertebrates - vertebrates A:
**Answer**
vertebrates