Part 3: How the biosphere regulates the earth’s services Flashcards
1
Q
- Why do biotic and abiotic factors need to interact?
A
a) To keep the ecosystem in equilibrium
2
Q
- What is an equilibrium?
A
a) When a system is balanced
3
Q
- How do biotic things cause weathering of abiotic things?
A
a) Tree roots break up rocks
4
Q
- How do biotic things contribute to photosynthesis?
A
a) Plants use CO₂ and make O₂
b) Animals use O₂ and make CO₂
5
Q
- How do abiotic things contribute to photosynthesis?
A
a) CO₂ and O₂ are stored in soils and the atmosphere
6
Q
- How do biotic things contribute to the nutrient cycle?
A
a) Plants die
b) Decomposers consume dead plants
7
Q
- How do abiotic things contribute to the nutrient cycle?
A
a) Nutrients are stored in the soil
8
Q
- How do biotic things contribute to the hydrological cycle?
A
a) Water moves through plants and animals
9
Q
- How do abiotic things contribute to the hydrological cycle?
A
a) Water moves through soil, the atmosphere, rivers and lakes
