If an object is 100 mm in length, how much in cm is it?

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

Hybrid instruments that play sounds that are part sampled and part synthesized are known as:

Which scientific design has both practical limitations and limitations due to scale? studying the effect of bleach on the growth of mold spores exposing cultures of duckweed to different intensities of light observing the replication of dna molecules with a hand lens using colored marbles to model a cross between two colors of rabbits