Which of the following methods would be most effective in preventing the evolution of pesticide resistance?
A) Using more pesticide whenever resistance appears in the pest population
B) Using pesticides only during major outbreaks of pests
C) Applying pesticides to the soil before planting and after harvesting a crop
D) Using crop rotation and biological controls instead of pesticides
D
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Which rock type makes up approximately 90% of the Earth's crust
A) sedimentary B) metamorphic C) igneous
In general, sedimentation rates decrease further offshore.
Answer the following statement true (T) or false (F)
Large, angular class are most likely at
a) glaciers at B and braided river at C b) mountains at A and glaciers at B c) delta at D and lake at E d) braided river at C and delta at D
Human activities that can significantly contribute to shoreline erosion include ____
A) building sand dunes near the backshore to protect property B) importing sand to beaches from offshore C) placement of seawalls along the shoreline D) excess fishing and boating activities