<u>Answer</u>:-
It is option c:
“He build sit underneath a tree”.
Explanation:
The second fire goes out because the man makes a mistake:
He builds the fire under a Pine tree. Although this makes it easier for him to collect sticks to feed the flames, it ultimately proves fatal. Eventually, the snow falls onto the fire itself, extinguishing it and leaving in its place a pile of fresh ❄️ snow.
<u>Answer</u>: D. calcium chloride
<em>Calcium chloride molecules can be ruled out as the mystery molecule</em>
<u>Explanation:</u>
<em>Artificial membranes are also called as the synthetic membranes.</em> It is created synthetically for the <em>special separation purpose in the laboratory. </em>
It is used to separate large molecules like <em>solid particles and big biological molecules like protein, DNA. </em>
They are produced from organic materials. <em>Calcium chloride contains the chloride ion and calcium ion,</em> as the chloride ion easily passes the artificial membrane so we can term <em>calcium chloride as the mystery membrane that passes the artificial membrane easily.</em>
Batteries, biomass, petroleum, natural gas, and coal are examples of stored chemical energy
