The unique characteristic of the amino acid cysteine is
a high level of acidity
its ability to form hydrogen bonds
its ability to form disulfide bridges a second amino group

C. the last one

Explanation:

the movement of aircraft through clouds can even cause lightning strikes. a single lightning event is a "flash", which is a complex, multi-stage explosively ejected.

explanation:

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the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.