Living and non living indicators how it is used to measure pollution

Science and technology are interdependent. advances in one lead to advances in the other. give an example of this phenomenon.

What kind of simple machine is a catapult?

Daughter element the new element produced along with a decay particle in a nuclear transmutation 2. half-life the substance that decays in a nuclear transmutation 3. parent element the change of one chemical element into another by nuclear decay or radioactive bombardment 4. transmutation the time required for the decay of one-half of the atoms in a sample of radioactive material