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Problem 8 - Entrance Test

Scientists are studying the effects of deforestation on the biodiversity of the Amazon rainforest. Initial findings suggest that the loss of habitat is _______ impacting various species, _______ causing a decline in their populations and disrupting the delicate ecological balance.

Correct: A

The correct answer is 'significantly; thereby'. 'Significantly' is the adverb modifying 'impacting'. 'Thereby' indicates the effect. 'Significant' is an adjective and cannot modify the verb. 'Thus' can work, but thereby is more clear as it directly states how the effect is happening.