Carbon forms the key component for all known life on Earth. Carbon is the basis of all molecules. Its is easily able to bond because of the 4 valence electrons.
You can use refraction which is the bending of light through a transparent material. Also the freezing and boiling points of water. One last one is the Cartesian five experiment, this shows the density of water. Hope this helped.
The advantages and limitations of obtaining informant report data for the courage trait are;
Advantages include;
Large amount of information
Definitional truth based on the observed acts of courage.
Limitations on the other hand include;
Very little behavioral data,
Error; much more likely to remember acts of courage than non-courageous acts.
I think it's hydrothermal vents? hope its right because I have short term memory loss.