Directions: Complete the crossword puzzle by filling in the word that fits each clue.
Write your answer on a separate sheet of paper.
ACROSS
DOWN
1 - the basic source of energy
1 - it is being affected by a
radiant energy
2 - one of the major pollutants in the
atmosphere
2 - it may increase the
population of algae and other
3- one of the main features of the soil aquatic animals
4 - it is where plants grow
3 - finding a new area where
habitat and food supplies is
available
4 - carries nutrients to organisms' body
and removes waste materials
5- it protects us from the radiant energy
of the sun
6-floods, tsunamis, and earthquakes​