1. What causes cholera, and how is it transmitted?
2. Why weren't Snow's ideas about cholera accepted at this early date?
3. Explain why cholera outbreaks are more consistent with contamination of water than air.
4. Given that cholera outbreaks are more consistent with contamination of water than air, why did the
miasma model persist?
5. How did Snow's experimental research on anesthesia help him design a new model for the cause of
cholera?
6. Why would evidence of cholera in people living side by side, differing only in water supply, provide
critical evidence?
7. When was the germ theory of disease proposed, and on what basis?

the answer is d.) homologous; have mammary glands

supercell thunderstorms are perhaps the most violent of all thunderstorm types, and are capable of producing damaging winds, large hail, and weak-to-violent tornadoes

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.