Answer:
Elements that are the border line of metals and non-metals.some elements near the stepped line have mixed properties of metals and non-metals these elements are called metalloid e.g. Silicon and Germanium
Explanation:
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2) Typhoonosis.
Here's why:
1)Salmonella-It's a pahtogen.
2)Typhoonosis-Typhoonosis doesn't exist, so it isn't a pathogen.
3) Staphylococcus Aureus-It's a pathogen.
4)Listeria-It's a pathogen.
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Microorganisms such as bacteria can be removed by disinfection. Certauns substances called biocides are addes to water to make it pure. Purification can also be done by UV-light .
Answer:
It allows information to go from one neuron to another through neurotransmitters.
