Ecosystem System
Name: ______________________ Date: ____________
Write the letter of the matching definition next to each term.
1. tree
A. What we eat to get energy and grow
2. river
B. A system formed by the interaction of a community of organisms with their physical environment
3. oxygen
C. A mammal with wings formed from its forelimbs.
4. food
D. An abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous ___
5. shelter
E. Long legless reptile that slithers
6. animals
F. Clear liquid we drink that falls as rain
7. soil
G. Scaly swimmer that breathes through gills
8. light
H. Gas in the air that we need to breathe
9. fish
I. Warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings
10. carbon
J. The part of the earth's surface consisting of humus and disintegrated rock
11. water
K. Protective covering that provides protection from the weather
12. frog
L. Study of the natural world through experiments
13. bird
M. Any of several herbivorous leaping marsupials of Australia and New Guinea having large powerful
14. snake
N. Any of various tailless stout-bodied amphibians with long hind limbs for leaping
15. ecosystem
O. Long stream of water flowing to the sea
16. science
P. Tall plant with a trunk and branches
17. bat
Q. Living things like dogs and birds
18. kangaroo
R. What lets us see; the opposite of dark