Describe diffusion using the words concentration and concentration gradient.
17 !

This device blocks an opening along the base/floor of stairs or other walking or working surfaces where materials or body parts might otherwise inadvertently fall through. it should be 4 inches high, with not more than ¼ inch clearance above the floor

Iwas conscious that a moment's mutiny had already rendered me liable to strange penalties, and, like any other rebel slave, i felt resolved, in my desperation, to go all lengths." what is meant by the term resolved as it is used in this sentence? a) determined b) questioning c) uneasy d) unsure

The greatest gift the sumerians gave the world was the invention of writing. the sumerians were wealthy people. they needed some way to keep track of what they owned. they began drawing pictures. they used a reed as a pen. they drew on soft pieces of clay. the soft clay was then dried in the sun. the tablet became a permanent record. later, the sumerian drawings changed into wedge-shaped symbols. this kind of writing is called cuneiform. by putting symbols together, the sumerians could write entire sentences.