The current taxonomic hierarchy is based on the ideas of , whose hierarchical classification scheme made a lasting contribution to systematics.

What is the next step in muscle contraction after the actin changes shape? (apex)

This is the main structural axis of the plant that supports leaves, flowers and fruits; transports fluids; stores nutrients and produces new tissue.

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.