A Refutable Hypothesis Must ____

question 41

Multiple Choice

A refutable hypothesis must ____.

• A) refer to variables that can be observed or measured
• B) make a positive statement about the existence of an effect or a relationship
• C) allow for the possibility that the observations will not support the hypothesis
• D) state at least one conclusion that has already been proven

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Definitions:

Carbon Dioxide

An invisible, scentless gas that results from the combustion of carbon-based substances and the respiratory process. It's a natural component of the air, which plants utilize in photosynthesis.

Atmosphere

The layer of gases surrounding Earth or another planet, vital for life as it provides oxygen, absorbs ultraviolet solar radiation, and traps heat.

Forests

Large areas dominated by trees and undergrowth, providing habitat for biodiversity and playing critical roles in the Earth's ecosystem.

Seed-tree Cutting

A forestry technique that involves leaving a few seed-producing trees standing to regenerate the forest.