Which of the following is most constant abiotic component of ecosystem___________?
Correct answer: D. Gravity
- A. Air
- B. Water
- C. Land
- D. Gravity
Explanation
Gravity is a highly constant abiotic factor because its strength does not vary substantially across the ordinary habitats of an ecosystem and it continuously influences water movement and organismal support. Students may choose water because it is essential to life, but its amount and availability can change greatly between habitats.
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About Biological Importance of Water
Water supports life through its polarity, hydrogen bonding and ability to dissolve ionic and polar substances. Its high specific heat, heat of vaporization, cohesion, adhesion and incompressibility help regulate temperature, transport materials and maintain structure, while hydrolysis and osmosis depend directly on water.
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