Answer:
The answer to your question is No
Explanation:
I think it is impossible to go a week without causing any chemical reaction. For example, if a drive my car or motorcycle, I am burning fuel and that is a combustion reaction.
Also, I want to cook, all this process involves a lot of chemical reactions among the components of food and maybe water.
If I take a shower or wash my hands, between the soap and the microbes occur are some chemical reactions that help to remove these organisms.
Also, when I wash my clothes something similar happens.
These are some examples of the chemical reactions that happen daily but I think there are a lot more.
Answer:
20%
Explanation:
The fish consumption has had lot of variations in the past few centuries, most noticeably in the last century. Initially it was the richer countries that had population which was consuming the most animal protein from fish in the world, while the developing nations had less. Things have changed though, especially during the 1990's, when the developing nations experienced a rapid increase in the consumption of fish. This was largely due to the growing standard and the availability of fish, so in some of the developing nations the percentage of animal protein from fish reached around 20%.
Answer:
D) 
Explanation:
Carbon.
The electronic configuration is -
Thus, 2s orbital is fully filled and p orbital can singly filled 3 electrons. Thus, Carbon has 2 singly occupied orbitals.
But in methane, 
it forms 4 bonds. So, 1 electron each from 2s orbital jumps to the next orbital in the p subshell.
Thus, the configuration is:-
Thus, the valence electron configuration is:-
