Struggling with various pests attacking the garden every year, a neighbor suggests that next year they might plant a row of marigold flowers completely around the outside edge of the garden
Sure enough, the next year they did this and had fewer pests and better crops. This strategy represents A) genetic control.
B) natural enemies control.
C) manual control.
D) cultural control.
D
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What effect has HIV/AIDS had on Sub-Saharan Africa? In which areas of the region has the spread of this disease been the greatest? What are the reasons for the variation of rates of this disease among different countries in the region?
What will be an ideal response?
In most locations ocean water salinity is in dynamic equilibrium, inputs equal outputs. What does this
mean and what are the inputs and outputs for dissolved solids in seawater? What will be an ideal response?
One challenge to the protection of endangered animal species from overexploitation for commercial purposes, such as rhinoceros horns, is that as a species becomes increasingly rare,
A) the laws protecting that species tend to become even more restrictive. B) the price of illegal animal products increases. C) it is more difficult for poachers to capture the animal. D) fewer poachers may search for the endangered animal.
The H1N1 flu virus is common in ________ but rarely transmitted to humans until recently
A) mosquitoes B) waterfowl C) pigs D) birds E) poultry