Q: The use of mercury-based dental amalgam has gone under question in recent years because of concerns regarding what? Choices: - the expense - the oxygen - the variability - the toxicity A:
the toxicity

Q: What kind of symmetry do echinoderm larvae have? Choices: - internal - radial - spherical - bilateral A:
bilateral

Q: Q: What is the jelly-like material in which the contents of the cell are suspended? Choices: - jam - cortisol - mitochondrial - cytosol A:
A: cytosol

Question: Q: What is the process of removing wastes and excess water from the body? Choices: - depletion - diffusion - ingestion - excretion A:
Answer: excretion

*Question*
Q: What is the outer core made of? Choices: - compressed air - solid rock - solid iron - liquid metal A:
**Answer**
liquid metal

*Question*
Q: Maintaining a high metabolic rate takes a lot of what? Choices: - food - calories - fuel - energy A:
**Answer**
energy