Researchers have demonstrated that organic farming ________
A) increases the incidence of invasive species
B) decreased organic soil losses while giving yields comparable to conventional farming
C) suppresses the biodiversity of pollinating insects, especially bees
D) is only sustainable with pesticides and synthetic fertilizers
E) presently has no market in Europe
B
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A 1-kg ball dropped vertically 2 m rebounds 1.5 m after bouncing from the ground. The amount of energy converted to heat is about
A. more than 2.0 J. B. 1.5 J. C. 1.0 J. D. 2.0 J.
The Trellis drainage pattern shown below develops ________.
a. in areas of relatively uniform surface b. materials on highly jointed bedrock c. on isolated volcanic cones or domes d. in areas of alternating weak and resistant bedrock e. in areas of folded and fractured domes
Where did water possibly form before it formed on Earth's surface?
A) close to the core B) the outer solar system C) the inner solar system near the Sun D) on the Moon
When an ENSO event occurs, warm equatorial waters flow ____ in the equatorial Pacific
A) ?east B) ?west C) ?north D) ?south