Limiting Factors

6. Producing new individuals to maintain a population is _____.
8. Abiotic and biotic limiting factors _____ the size of populations.
12. Climate change can ___ where species live and how they interact.
13. Each ecosystem has its own carrying capacity that depends on the ability of the producers to ____ the ecosystem food web.
14. The total number of individuals that an ecosystem can sustain indefinitely is the carrying ____.
15. Earth's climate changes over _____.
16. Energy enters the ecosystem as sunlight, or _____energy.
17. _____ changes put pressure on populations.
20. In ____ ecosystems, there must be survivors of every species in sufficient numbers to reproduce.
24. The rate at which a species can increase its population is its reproductive ____.
25. Growth and survival rate are ____ when animals arrive at a location before or after their normal seasonal food sources
27. Winter is the main limiting factor for many temperate and ____ populations.
28. _____ destruction is a serious limiting factor for many organisms.

1. In the temperate and polar latitudes, ____ is a major factor in population limitation.
2. Populations are limited by food _______.
3. _____ can occur at any stage in the life cycle of an organism.
4. Many organisms use ______, reduced activity, and winter sleep to wait out the winter.
5. Climate change is predicted to cause _____ in species extinction over the next 100 years.
7. _____ production is the amount of food that can be consumed and redistributed throughtout the ecosystem over the course of a year.
9. During winter, days are shorter, so production by _____ organisms slows or stops entirely.
10. Every living thing has ____ requirements for life.
11. Without an environment that provides for the physical conditions needed to reproduce, ____will not be born.
18. A ______ organism can enter a population and kill large numbers of individuals.
19. Birds, because of their ____, are famous for migrating to warmer regions.
21. Food provides the ____that is essential for survival.
22. Lack of ____ is one of the most important limitations on populations.
23. Many organisms require ______ conditions in order to reproduce.
26. Photosynthetic organisms capture the energy and transform it into ____, like sugar, that we call food.