Please help!! Look at this diagram of light traveling from a pair of
keys underwater to a boy's eyes. Notice how the light
refracts as it is transmitted from the water into the air.
How does the actual position of the keys compare to the
position that they boy perceives the keys to be in? Do the
keys seem to be shallower, at the same depth, or deeper in
the water than they actually are? Explain your reasoning.

b.

hoped i

explanation:

the transfer of energy between two molecules spaced just nanometers apart plays a key role in many technologies, including photovoltaics, quantum information systems, lighting, and sensors, as well as in biophysics to measure nanometer distances and in photosynthesis. but an open question in this area is what effect, if any, the surrounding photonic environment has on this nanoscale energy transfer. by designing and performing a carefully controlled experiment to answer this question, scientists have settled the debate and found clues to improving the efficiency of many of the technologies that rely on this process.

explanation:

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products