Why are researchers seriously concerned with the phenomenon of colony-collapse disorder Ａ. Because honeybees produce one-third of the foods we eat. Ｂ. Because honeybees feed on flowers. Ｃ. Because honeybees eat seeds of flowers. Ｄ. Both B and C.
Why are researchers seriously concerned with the phenomenon of colony-collapse disorder
Ａ. Because honeybees produce one-third of the foods we eat.
Ｂ. Because honeybees feed on flowers.
Ｃ. Because honeybees eat seeds of flowers.
Ｄ. Both B and C.