Nitrogen Cycle

Name: ______________________   Date: ____________

Write the missing letters on the lines to finish each word.

1.
N i t g
A common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas
2.
F x a t
3.
B a r i
Tiny single-celled living things, some of which cause illness
4.
P a t
Living things like trees and flowers that grow in soil
5.
D e c o s i
The analysis of a vector field
6.
A n s
Living things like dogs and birds
7.
L i g n g
Descent of the uterus into the pelvic cavity that occurs late in pregnancy
8.
S l
The part of the earth's surface consisting of humus and disintegrated rock
9.
E r n m n
The natural world around us
10.
C c
An interval during which a recurring sequence of events occurs
11.
R o
The usually underground organ that lacks buds or leaves or nodes (plural)
12.
N o e