A team of researchers, through a study, has come across another harm caused by global warming. The team noted that global warming and evolution is reshaping bodies of some American bumblebees.

The study showed that the tongues of the two Rocky Mountains species of bumblebees are about one-quarter shorter than they used to be 40 years ago. Study authors said the bumblebees are evolving this way because climate change altered the buffet of wildflowers they normally feed on.

According to the researchers, in one of these species, they found that the tongue had been almost half the size of the bee's body, the equivalent of a human tongue going down to the waist.

Now, when the flowers where the long tongue is required have dwindled, the bees didn't need that much tongue, said the researchers.

Study lead author Nicole Miller-Struttmann at the State University of New York, Old Westbury said in a statement that keeping long tongues need bees to use more energy, so the bees evolved with shorter tongues that allow them to sample a wider variety of flowers.

Study co-author Candace Galen at the University of Missouri said the researchers also tracked how global warming has played a role in altering the developmental, migration, timing and other behavior in plants and animals, what makes this study unusual is the physical changes in the bees.

Galen said, "It speaks to the magnitude of the change of the climate that it's affecting the evolution of the organisms. It's a beautiful demonstration of adaptive evolution".

They also found that the temperature in the area had warmed by about 3.6 degrees since the 1960s and the type and amount of flowers had changed.