Q: What process typically occurs to metal exposed to outside elements? Choices: - shrinkage - extraction - explosion - corrosion A:
corrosion

Q: The chemistry of each element is determined by its number of what? Choices: - nuclei and neutrons - protons and neutrons - electrons and neutrons - protons and electrons A:
protons and electrons

Q: Q: Drip iirigation requires less water and reduces what? Choices: - moisture - bacteria - sediment - salinization A:
A: salinization

Question: Q: What branch of science offers an overview of the physiology of humans? Choices: - marine biology - geology - engineer - human biology A:
Answer: human biology

*Question*
Q: People with osteoporosis have an increase risk of what? Choices: - cancer - muscle loss - weight loss - bone fractures A:
**Answer**
bone fractures

Q: Q: The structure of the boeing 787 has been described as essentially one giant macromolecule, where everything is fastened through cross-linked chemical bonds reinforced with this? Choices: - nitrogen fiber - non-covalent interaction - metal-metal bonds - carbon fiber A:
A: carbon fiber