Answer:
period 4 im in middle school btw
Explanation:
Answer:
Compound are formed by <em><u> </u></em><em><u>Chemical </u></em><em><u> </u></em>Change।।
Answer:
A) a new type of refrigerant that is less damaging to the environment is developed. Applied development
B) a new element is synthesized in a particle accelerator. Basic development.
C) a computer is redesigned to increase the speed of the computer. Technological development.
Explanation: