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.

Tortoise shells and snail shells are similar in function: they protect the organism from predators. based on a comparison of the organisms in the images, what can you conclude? 1. tortoises and snails have homologous organs, and they’re evolutionarily related. 2. tortoises and snails have homologous organs, and they belong to same species. 3. tortoises and snails have analogous organs, and they belong to the same species. 4. tortoises and snails have analogous organs, and they don’t belong to the same species. 5. tortoises and snails have analogous organs, and they aren’t evolutionarily related.

He did chinese culture change during the warring states period

The structure of adenosine triphosphate (atp) is shown here. which statement best explains how energy stored in the chemical bonds of atp can be released.