Question

What is the difference between resource conservation and sustainable development

Answer 1

resource conservation is conserving resources by judicious use of them for better progress and future use.
sustainable development is judicious use of resources without harming the environment and also conserving for the use of future generation.

Hope so it will work.

Answer 2

using resources carefully and also conserving them for the future is called resource conservation

balancing the need to use the resource and also giving them time to get renewed is called sustainable development