Air
renewable resources are helpful to mankind because we can reuse it but we have to use it wisley that is why it is helpful to mankind
yes
Yes, they are. Robots have helped make many technological advancements.
most helpful, more helpful
The atomic number of the element would be the most helpful piece of information for identifying it, as each element has a unique atomic number that corresponds to the number of protons in its nucleus.
more helpful, most helpful
A video showing a person demonstrating the CPR technique
A video showing a person demonstrating how to launch a model airplane
In a health context, gold is "helpful". It's entirely inert -- it doesn't do anything in your body chemically. It doesn't have too many medical uses, however. Most of these are dental.
I know his inventions weren't harmful to mankind for sure and they were helpful to mankind but am not so sure but he was a good man for sure and he didn't have a wife or sibling or children and he died when he was 48 years oldand he was a virgin I found that out he was a very good man it's very sad that he died when was only 48 year's old
Silkworms are the 2nd most useful insect known to mankind, as it produces silk, did you know that one cocoon is made of a single thread more or less 914 meters long.
Any Element found by mankind is on the Periodic Table.