Predator-Prey Relationships. â¢ An interaction in which one animal (the predator) captures and feeds on another animal (the. prey) is called ______________________. â¢ Predators can affect the ___________ of prey populations in a community and determine the. places prey can __________________________________.redator-Prey Relationships. â¢ An interaction in which one animal (the predator) captures and feeds on another animal (the. prey) is called ______________________. â¢ Predators can affect the ___________ of prey populations in a community and determine the. places prey can __________________________________.
Noun. 1. Gy-the SI unit of energy absorbed from ionizing radiation; equal to the absorption of one joule of radiation energy by one kilogram of matter; one gray equals 100 rad. gray. radioactivity unit-a measure of radioactivity.
gamma ray. A stream of electromagnetic radiation having wavelengths shorter than those of x-rays and therefore greater energy and penetrating power.. A photon of electromagnetic radiation of very short wavelength, less than about 0.01 nanometer, and very high energy, greater than about 100,000 electron volts. Gamma rays are emitted in the decay of certain radioactive nuclei and in electron-positron annihilation. 2. A narrow beam of such photons.