Factors affecting fish populations

Name: ______________________   Date: ____________

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

1.
p r a t o n
2.
m g r a i n
The movement of persons from one country or locality to another
3.
p o l u t n
Undesirable state of the natural environment being contaminated with harmful substances as
4.
u t r i n s
Any substance that can be taken in by a green plant and used in organic synthesis (plural)
5.
i s e a e
An illness that harms the body
6.
p y o p l k t o n
Photosynthetic or plant constituent of plankton
7.
r r d u c t i n
The process of generating offspring
8.
r e c r i m n
The act of getting ___
9.
m o r a l y
The quality or state of being ___
10.
f o d s p p y
11.
h a e s t n g
The gathering of a ripened crop