Answer:
Yes.
Explanation:
In fact, photons are the only things that humans can directly see. Human eyes are specifically designed to detect light. This happens when a photon enters the eye and is absorbed by one of the rod or cone cells that cover the retina on the inner back surface of the eye.
Answer:
The correct answer is - 1) independent 2) X.
Explanation:
independent variable is the variable or the factor that is altered or made constant or controlled to see or test the effect on the dependent variable in an experiment. Time is used in the experimental protocols in such a manner that it is considered as the independent variable.
In a graph, time is always plotted in the X-axis as independent variables are normally plotted horizontally in a graph.
Thus, the correct answer is option - 1) independent 2) x.
Answer:
In the past few decades, Carbon dioxide levels has been rising.
Explanation:
- Rising levels of Carbon dioxide has become an immediate concern for the Environmentalists.
- This is because carbon dioxide is a green house gas and risen levels of green house gases can lead to unusual warming up of the Earth's Atmosphere.
- This phenomenon is termed as Global warming.
- Global warming can lead to seasonal variation and melting of the ice caps to flood several continents.
- In Last few decades The levels of Carbon dioxide is rising at an alarming rate.
- This rise occurs due to the to burning of fossil fuels, combustion of fuels in automobiles, Deforestation etc
- An immediate step is needed to check this addition of carbon dioxide.
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