Name _____________________________________ Per ____________ Date ____________
The Ecology Review Worksheet
1. Ecology is the ________ of the ______________ of organisms with one another and with their _________________.
2. Fill in the levels of organization from largest to smallest
Biosphere
________ _______
___________________
______________________
______________________
______________________
______________________
3. Name at least 3 biotic and 3 abiotic factors in the ecosystem to the right
(ignore the numbers on the diagram).
Biotic
Abiotic
4. Age – Structure Graph:
In Mexico, what percentage of the population is between 0-4 years of
age?
In the US?
Which Population is growing faster?
Which age group has the smallest number in both countries?
5. The picture to the right is an example of ________________________.
6. In the Carbon Cycle, List at least 3 ways CO2 gets INTO THE
ATMOSPHERE:
How does CO2 GET OUT OF THE ATMOSPHERE?
7. What is Biological Magnification?
8. Draw an energy chain below
with the sun, one producer and at least 3 consumers.
9. Explain the Nitrogen Cycle.
10. Why is nitrogen important (*HINT: What do we need it for)?
11. Why are bacteria important to us? In which cycle do we rely on them?
Name _____________________________________ Per ____________ Date ____________
12. Which cycle contributes to acid rain?
13. Population growth is controlled by _______________ ____ ___________ and ___________ __ _______________
14. What is the GREENHOUSE EFFECT & what cycle affects it?
15. Density‐dependent (DD) or Density‐independent (DI) factor?
a) Freezing weather ____________
b) A volcanic eruption ____________
c) Predation _____________
d) Floods or fires _____________
e) Disease or parasites __________
f) Tends to be biotic _________
16. A symbiotic relationship where one organism benefits and the other is harmed is called _____________________
17. A symbiotic relationship where both organism benefit is called _____________________
18. A symbiotic relationship where one organism benefits and the other is not harmed is called ___________________.
19.(pg 97) What are the two types of population growth?
20. What type of population growth are humans currently undergoing?
21. What do you think will cause us to reach our
carrying capacity?
22. Besides major natural disasters, what is the
largest source of change to ecosystems?
________________________
23. According to the ecological pyramind to the
right there are many more __________________
than there are primary consumers.
24. Organisms that eat the secondary and tertiary
consumers would be
____________________________________
25. Who are the producers : _______________________
_________________________________________
26. Rats are _____________________ consumers.
27. If the producers started with 6,000,000 units of energy how much energy would be given to each
level
(Fill out the pyramid to the right)
28. How is energy lost as you move up trophic levels?