Q: Many species secrete a hard external skeleton of what? Choices: - sodium bicarbonate - hydrogen carbonate - carbon dioxide - calcium carbonate A:
calcium carbonate

Q: Which process acts as a natural complement for cellular respiration? Choices: - glycolysis - atherosclerosis - absorption - photosynthesis A:
photosynthesis

Q: Q: A heterogeneous mixture of particles of one substance distributed throughout a second substance in a different phase is known as what? Choices: - disruption - solution - fluid - suspension A:
A: suspension

Question: Q: Another name for table salt is? Choices: - hydrogen chloride - carbon chloride - dioxide chloride - sodium chloride A:
Answer: sodium chloride

*Question*
Q: What organism are resistant to freezing and drying and also are metabolically inactive? Choices: - giardia - spirogyra - trichina - zygosporangia A:
**Answer**
zygosporangia

Q: Q: An object's energy due to motion is known as? Choices: - residual energy - inertia - thermodynamic energy - kinetic energy A:
A: kinetic energy