Bromthymol blue is a chemical that changes color to indicate the presence of oxygen or carbon iv oxide in a water sample. If oxygen is present it changes color from green to blue and if carbon iv oxide is present it changes from green to yellow. Therefore in this case where the BTB was green, it means there was no oxygen or carbon iv oxide in the beaker.
humans cannot impact one of Earth's systems without impacting the others because Earth's systems are interconnected. They interact with each other, moving matter from one system to the other. Changes to the atmosphere brought about by human activity eventually lead to changes in the biosphere and hydrosphere.
Answer:
adaptive radiation
Explanation:
In biology, adaptive radiation is the process where organisms quickly diversify from an ancestor species into a multitude of new forms, especially when a change in the environment makes new resources available, alters interactions or opens new environmental niches.
the answer is b, faster through steel than through air.