Question

how are humans reliant on ecosystems?
only for recreational purposes
for essential services and resources
humans are completely independent of ecosystems.

Explanation:

Ecosystems provide humans with essential resources like food (from plants and animals), water (purified by natural systems), and materials (e.g., wood for shelter). They also offer services such as air purification (plants absorb carbon dioxide and release oxygen), climate regulation (forests and oceans influence weather patterns), and soil formation (which is crucial for agriculture). Recreational use is a part but not the only or main reliance. And humans cannot be independent as all life - support systems (air, water, food) are derived from ecosystems.

Answer:

for essential services and resources