Sample Response: Scientists believe that light is
made of streams of particles because only the presence
of photons can explain phenomena observed during
experiments on the photoelectric effect. These
observations include only some frequencies of light
causing the ejection of electrons, no time gap existing
between light striking a metal and electrons being
ejected, and intensity having no effect on the kinetic
energy of the ejected electrons.

In an ecosystem, marsh snails feed on phytoplankton and painted turtles feed on marsh snails. pollution has resulted in the depletion of phytoplankton. what effect would this situation likely have on the population of marsh snails and painted turtles? as phytoplankton were destroyed, the population of marsh snails would most likely then the population of painted turtles would mostly likely a. 1. increase 2. decrease 3. stay the same b. 1. increase 2. decrease 3. stay the same

How do we determine if they are made with matter

Which will you likely have to provide on a college applications. a.) personal information, b.) parents level of education, c.) career plans, d.) employment history