Question

12th grade mid - year assessment
international journal of agricultural sustainability shows a possible link between monoculture landscapes and fewer wild pollinators. this research begs the question: is there a better way to grow our food?
monocultures dont exist in nature. natural ecosystems that appear to be dominated by one plant or tree species (such as grasslands or some temperate forests) also have many other plant species growing under and around them. this diversity of plant species and sizes supports diverse wildlife communities, and this diversity supports ecosystem services such as pollination and biological control.
when this diversity evanesces, the results can be disastrous. the dust bowl years (1934 - 1940) on the american great plains showed us what can happen when natural ecosystems are overwhelmed by intensive, single - crop farming.
5 my research focuses particularly on almond orchards. in the mallee woodlands and shrublands of southern australia, probably one of the most understudied and important ecosystems for conservation, almond orchards are rapidly expanding. large fruit tree orchards differ from field crops because they are permanently embedded in the landscape for more than 10 years. therefore, they may have more serious, long - term impacts on the environment than an annual crop.
assessment questions
27 out of 36 answered
question 30
what is the meaning of \evanesces\ as it is used in paragraph 4?
a. transpires
b. moderates
c. permeates
d. vanishes

Explanation:

The context describes what happens when diversity is lost, like in the case of the Dust - Bowl years due to single - crop farming. "Evanesces" here means disappears as the loss of diversity leads to disastrous results.

Answer:

D. vanishes