Which of the following is an example of sustainable use of natural resources?
a)continuously strip mining coal deposits in an area

b)clear-cutting a forest

c)harvesting huge populations of fish from a fishing shoal

d)planting multiple crops together on a field and harvesting them at different times

d)planting multiple crops together on a field and harvesting them at different times.

Explanation:

Sustainable use of natural resource can be define as the use of resource in a manner so that they remain available for present and future generation.

d)planting multiple crops together on a field and harvesting them at different times is the correct option this is because of the fact that if multiple crops are grown on the same field. This will lead to addition of minerals to the soil directly by the growth of plants or by symbiotic association of plant roots with the soil microbes. This will keep the soil in fertile state so that the future crops can be grown over it.

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The property of cohesion describes the ability of water molecules to be attracted to other water molecules, which allows water to be a "sticky" liquid. Hydrogen bonds are attractions of electrostatic force caused by the difference in charge between slightly positive hydrogen ions and other, slightly negative ions.