An article about half-lives describes a parent isotope. What is a parent isotope? the isotope that forms from the radioactive decay of a less stable isotope
the isotope that forms from the radioactive decay of a more stable isotope
an isotope that undergoes radioactive decay to form a less stable isotope
an isotope that undergoes radioactive decay to form a more stable isotope

The answer is D. an isotope that undergoes radioactive decay to form a more stable isotope on E2020

I got it right on a test. Have a good day c:

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.

Ms.hidalgo opens the door to her classroom. her classroom is 60 degrees and the air outside is 80. predict what will happen using your knowledge of how heat flows.

What properties of a moving object are used in determining the object's energy of motion