MM
Mashaal Masha
Jan 07, 2024
Known as Earth's "living skin," biocrusts are thin layers of soil held together by surface-dwelling microorganisms such as fungi, lichens, and cyanobacteria. Fortifying soil in arid ecosystems against erosion, ________
Which choice completes the text so that it conforms to the conventions of Standard English?
Difficulty: Hard
A:
a recent study's estimate is that these crusts reduce global dust emissions by 60 percent each year.
B:
an estimated 60 percent reduction in global dust emissions each year is due to these crusts, according to a recent study.
C:
these crusts reduce global dust emissions by an estimated 60 percent each year, according to a recent study.
D:
a recent study has estimated that these crusts reduce global dust emissions by 60 percent each year.
ID: 659a41d862005068df096bd9