Question

Please give me answer
$and \: give \: correct \: ans$
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Answer 1

$\bigstar\:\:\underline{\red{\sf AnsWer :}} \: \: \bigstar$

1. Bacteria $\longrightarrow$ Cholera

2. Rhizobium $\longrightarrow$ Nitrogen fixation

3. Virus $\longrightarrow$ AIDS

4. Protozoa $\longrightarrow$ Malaria