Answer:
United Nations Conference on Environment and Development (UNCED), byname Earth Summit, conference held at Rio de Janeiro, Brazil (June 3–14, 1992), to reconcile worldwide economic development with protection of the environment.
Explanation:
B. Qualitative as they will be writing down the physical description of their observations. Quantitative is numbers, empirical is not correct, and theoretical is guessing.
Answer:
C. The point where two rivers meet
Explanation:
The noun Confluence means "the junction of two rivers, especially rivers of approximately equal width."
Atmospheric gasses that absorb infrared radiation
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