Many bacteria reproduce asexually. the bacterium shown here is reproducing asexually, by binary fission. the definition of a is a group of interbreeding individuals cannot be easily applied to organisms that reproduce only or mainly by asexual methods.

What was the land like over 500 million years ago? what was under the sea?

The distant ancestors of tigers may have had bodies without stripes. use the theory of natural selection to explain how tigers may have evolved to have stripes.

How did alexander fleming’s research solve a societal problem? he developed ways to treat inherited diseases. he advocated for regular hand washing to kill germs. he discovered a new type of medicine that could treat infections. he discovered the cause of mad cow disease, an emerging disease.