1. What is the nutritional relationship between an orchid growing on a tree branch, neither hurting nor helping the tree?

2. Man's God-given authority to use nature to meet his physical needs.

3. Plants are usually on the _______ trophic level of a food chain.

4. Evaporation, condensation, and precipitation are the three major processes of the _________ .

5. What is the nutritional relationship between cattle trample grass with their hooves, crushing it?

6. An organism's environment or home is its __________.

7. animals that regulate their temperature by internal mechanisms and maintain a stable body temperature regardless of their environment

8. the entire period of growth from fertilization to birth

9. Chickens will dig in the dirt with their feet to find seeds and insects to eat. In what group are chickens classified by their eating habits?

10. hottest and driest biome

11. A species that still exists on Earth today but is in danger of completely dying out.

12. largest living marsupial

13. Because they lay eggs, the echidna and platypus are ______ mammals.

14. found at high mountain altitudes

15. mostly arboreal, are noted for their intelligence, and have five fingers and toes with nails instead of claws

16. found near the equator and characterized by abundant rainfall

17. What is the nutritional relationship between a hawk capturing and eating a rabbit?

18. What is the nutritional relationship between bees feeding on nectar from flowers and carry pollen from flower to flower on their legs?

19. 1. Water - affectedly directly by irrigation and drainage and indirectly by time of planting (through rainfall in different seasons). Affects all plant activities and is essential for life. 2. Soil - can be controlled by growing plants in purchased topsoil and by fertilization. It provides minerals and other nutrients and affects soil water and oxygen. 2. Temperature - affected greatly by growing plants indoors or indirectly by planting at different times of the year. Affects all plant activities.

20. What type of marine ecosystem occurs where nutrient-rich fresh water from rivers and streams meets and mixes with seawater?

21. When an animal's body can be divided along a plane so there are distinct left and right halves that mirror each other.

22. Rabbits, hares, and pikas are ________.

23. Sweet potatoes grow best when the soil pH (a measure of acidity) is between 5.0 and 5.9, but they can grow when the pH is outside of the range. What property of sweet potatoes does the pH range from 5.0 to 5.9 represent?

24. All ecosystems fall into one of two general categories, aquatic and ____________.

25. a model showing all possible feeding relationships at each tropic level is a _________.