World organizations such as the united nations began to discuss sustainable development in
the
1890s
1970s
1990s
1920s

The correct option is C. World organizations such as the United Nations began to discuss sustainable development in 1990's.

Explanation:

In 1992, the United Nations Conference on Environment and Development held a summit with the main idea of sustainable development. This summit marked the importance of sustainable development to make rapid progress. The main concern of this summit was to check the actions of the humans and their effect on Earth. The summit was of the view that if activities of the humans remain unchecked and unsustainable, then it would be very difficult to live on Earth and the planet might be destroyed.

a chair, a bed, and a toothbrush

explanation:

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above