It is metal working. I know for a fact!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Children can expand their thinking by making connections. Children sort and categorize objects as one way of learning how things are connected. ... As young children grow and develop, they learn to make connections in order to understand and master their worlds.
Answer:
Biodiversity is important to humans for many reasons. Ecological life support-biodiversity provides functioning ecosystems that supply oxygen, clean air and water, pollination of plants, pest control, wastewater treatment and many ecosystems services.