The correct answer here is "cell membrane". Generally it makes sure that nothing enters or leaves the cell, except by its highly guarded "gates", such as ion channels, that let some particles through - but they're very picky about whom to let in!
Answer:
Answer:
Explanation:
1. Monoculture
2. Erosion
3. Desertification
4. Bio-logical Magnification
5. Bio- diversity
6. Ecological hot spot
7. ecological footprint
8. Ozone Layer
9. Aquaculture
10. Global Warming
Explanation:
Answer:
These spheres are closely connected. For example, many birds (biosphere) fly through the air (atmosphere), while water (hydrosphere) often flows through the soil (lithosphere). In fact, the spheres are so closely connected that a change in one sphere often results in a change in one or more of the other spheres.
Explanation:
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