Question

How can substances be changed into resources ? Explain with the help of example?​

Answer 1

Explanation:

For example; milk has economic value, but a beautiful landscape has no economic value. But both are important because both satisfy some human needs. Time and technology are two important factors which can change a substance into resources. For example; petroleum was not a resource before people learnt to use it.

Answer 2

Answer:

$\huge\bold\pink{☂Answer☂}$

Some resources have economic value, while some do not. For example; milk has economic value, but a beautiful landscape has no economic value.Time and technology are two important factors which can change a substance into resources. For example; petroleum was not a resource before people learnt to use it.