Which choice best describes the function of the underlined portion in the text as a whole?

Ecologists have long monitored how non-native flora alter

Question

Which choice best describes the function of the underlined portion in the text as a whole? Ecologists have long monitored how non-native flora alter wildfire regimes in the American West. Cheatgrass (_Bromus tectorum_) germinates weeks earlier than native bunchgrasses, drying into flammable carpet tinder by early June. By shortening the median fire return interval from fifty years to under a decade, cheatgrass effectively precludes native perennials from reaching reproductive maturity, thereby locking the ecosystem into a self-perpetuating monoculture.

Accepted Answer

It explains the specific ecological mechanism through which the invasive species permanently displaces native competitors.

Answer

It questions the validity of empirical field techniques utilized by regional botanists.

Answer

It provides historical context detailing when cheatgrass was first introduced to North America.

Answer

It proposes an agricultural herbicide regimen to eradicate flammable desert grasses.

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