Answer:
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Explanation:
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Planners and engineers are responsible for ensuring the work zone is operating properly and drivers are responsible for traveling safely through construction zones. In a work zone, drivers should always pay attention to roadway signs, construction workers on or near the road and the road's surface.
Cold blooded, lay eggs in water, and respire both by skin and lungs, and they have a three-chambered heart.
<u>Answer:</u>
Discovery of vaccine for smallpox, viruses and actual organisms that cause many diseases lead to the development of Germ Theory.
<u>Explanation:</u>
- Theory was the 'predominant theory' of 'disease transmission' before germ theory but it is no longer accepted as a 'scientific theory' of diseases.
- 'Formal and reliable experiments' on germs and diseases relationship were 'conducted by Louis Pasteur'.
- He showed that growth of microorganisms was not a spontaneous generation and his pasteurization experiment provided key pieces of evidence that supported germ theory.
