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honeybees help produce one-third of the foods we eat. parasites on bees may spread everywhere. honeybees cannot find enough food elsewhere. honeybees feed on flowers.
flexibility and initiative intelligence and sensitivity independence and endurance instincts and form
honeybees help produce one-third of the foods we eat parasites on bees may spread everywhere honeybees cannot find enough food elsewhere honeybees feed on flowers
Bees’ genes allow them to expand their colonies. Bees’ genes help keep them in their hives. Bees’ genes make them fly from flower to flower. Bees’ genes could explain the collapse of some colonies.
Population explosion. Decreasing number of flowers around. Genetically modified products. Diseases and chemicals.
Bees’ genes allow them to expand their colonies. Bees’ genes help keep them in their hives. Bees’ genes make them fly from flower to flower. Bees’ genes could explain the collapse of some colonies.
Population explosion Decreasing number of flowers around Genetically modified products Diseases and chemicals
increase their activity in lower temperatures leave cold climates during winter remain dormant(休眠的) through periods of cold weather construct insulated hives
Bees’ genes allow them to expand their colonies. Bees’ genes help keep them in their hives. Bees’ genes make them fly from flower to flower. Bees’ genes could explain the collapse of some colonies.
The Communal Life of Bees The Structure of the Bees The Organization of Insect Colonies The Life of Social Insects
Because honeybees produce one-third of the foods we eat Because honeybees feed on flowers. Because honeybees eat seeds of flowers. Both Ｂ and Ｃ.
Worsening environment. Disease and chemicals. Dwindling number of flowers around. Changes in genes’ structures.
Farmers apply certain chemicals to kill unwanted bees. The insecticide destroys the honeybee’s nervous system. The insecticide affects the honeybee’s memory. All of the above.
Honeybees are flying all across the country. Half of the honeybees in the US have died. Honeybees are leaving their hives and do not return. Honeybee hives are in disorder.
Farmers apply certain chemicals to kill unwanted bees. The insecticide destroys the honeybee’s nervous system. The insecticide affects the honeybee’s memory. All of the abov
reproduce in large numbers control the temperature where they live divide the work of their colonies have a complex defense system
Worsening environment. Disease and chemicals. Dwindling number of flowers around. Changes in genes’ structures.
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