Answer: burning of Fossil fuels can disrupt the carbon cycle as it produces CO2 ,which causes environmental problems such as acid rain ,global warming , greenhouse effect etc.
Explanation:
Answer:
For example, addition of an orange chromic acid reagent to some compounds causes the chromium reagent to change to a blue-green color (Figure 6.37a). This is considered a "positive" test result, and in this case indicates the presence of a functional group that can be oxidized (alcohol or aldehyde).
Parietal and frontal.. whichever one your looking for
Answer:
Because, Air (or any gas) takes up space in water, just like solids. Air (or any gas) is less dense than water, so gas bubbles float to the top of water.