What is the importance of water on Earth?
A. It keeps the top layer of the geosphere cool.
B. It allows life to exist.
C. It provides ice at the poles.
D. It creates Earth’s blue color from space.
Plz help
The correct answer to the question, "What is the importance of water on Earth?" is B. It allows life to exist.
Water is essential for the survival of all living organisms, making it a critical component of our planet. Here's how you can arrive at the correct answer:
1. Eliminate option A: "It keeps the top layer of the geosphere cool." While water can have a cooling effect on the Earth's surface, it is not the primary purpose or significance of water on our planet.
2. Consider option C: "It provides ice at the poles." While water does freeze and form ice at the Earth's poles, this is more of a result of water's properties rather than its importance. The presence of ice at the poles does not capture the overall significance of water on Earth.
3. Consider option D: "It creates Earth's blue color from space." Although it is true that water contributes to Earth's blue appearance when observed from space, this is not the crucial importance of water but rather a visual characteristic.
4. Consider option B: "It allows life to exist." This option directly addresses the fundamental importance of water on Earth. Water is essential for the survival and functioning of living organisms, facilitating various essential biological processes like hydration, metabolism, and transportation of nutrients.
Therefore, the correct answer is B. It allows life to exist.