plunge, plummet (synonym)

fluctuate (define)

approximately (synonym)

considerable amount means...

slightly (antonym)

resistant (define)

agree (-ing or inf?)

the process or science of changing the structure of the genes of a living thing in order to make it healthier, stronger, or more useful to humans

begin (-ing or inf?)

decide (-ing or inf?)

refuse (-ing or inf?)

manage (-ing or inf?)