Emission or Transmission of Energy
This page is the CodyCross answer for the clue below from Taking Care of Our Planet, Group 1570, Puzzle 2 (Planting Trees).
Question is: Emission or Transmission of Energy
and the answer is: RADIATION
Word Meaning:
RADIATION — The shooting forth of anything from a point or surface, like diverging rays of light.
Definitions from Wiktionary.