The summary discusses the key points about resources from the document:
1. Resources are anything that can satisfy human needs and have utility or usability. Natural resources include things found in nature like land, water, forests etc. while human made resources are created by humans using technology.
2. Resources are classified as renewable, non-renewable and human resources. Renewable resources can replenish but overuse can affect them. Non-renewable resources have limited stocks. Human resources refer to people's skills, knowledge, health and education level.
3. Conserving resources through reducing consumption, reusing and recycling is important for sustainable development so resources last for future generations. Individual actions together can help protect the environment