Which of the following is an idea that forms the foundation of environmental literacy?
a. Our ecological footprints have greatly decreased in recent years.
b. We should not exceed the earth's ecological and climate change tipping points because the consequences could last for hundreds to thousands of years.
c. Natural capital matters only because it supports economies, not the biodiversity.
d. Natural capital matters only because it supports biodiversity, not economies.
e. The recognition that the earth needs humans more than humans need the earth.