The Carbon Cycle
Name: ______________________ Date: ____________
Write the missing letters on the lines to finish each word.
1.
a
o
y
The organic circulation of ___ from the atmosphere into organisms and back again
2.
y
An inferior state resulting from the process of ___
3.
b
o
i
o
A heavy odorless colorless gas formed during respiration and by the decomposition of organic
4.
e
s
Force pushing on something
5.
r
i
g
The bodily process of inhalation and exhalation
6.
a
i
Utility to warm a building
7.
e
i
i
The metabolic processes whereby certain organisms obtain energy from organic molecules
8.
a
s
r
Layer of air around the Earth
9.
o
u
n
A substance formed by chemical union of two or more elements or ingredients in definite proportion (plural)
10.
l
A soft whitish calcite
11.
n
m
Living things like dogs and birds
12.
s
t
n
A sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals
13.
l
t
Living things like trees and flowers that grow in soil
14.
m
a
o
n
The phenomenon of ___ or gravel accumulating
15.
b
i
The act of ___ something
16.
a
l
r
a
o
A process in which one or more substances are changed into others
17.
c
Fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period
18.
n
t
a
A fossil fuel in the ___ state
19.
t
y
h
s
How plants make food from sunlight