Choose the correct option regarding the process of diffusion.

  • A
    Diffusion needs $ATP$.
  • B
    Diffusion is an active and rapid process.
  • C
    Diffusion is rapid over short distances but extremely slow over long-distance transport.
  • D
    Diffusion is slow over short distances,but rapid over long-distance transport.

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Water is necessary for which of the following processes or functions in plants?

Definitions / Explanation :
$(1)$ Cohesion force
$(2)$ Adhesion force

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At what temperature is the density of water the highest (in $^\circ \text{C}$)?

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