If i was in the age where electricity was not a thing and where there was no electricity, yes because coal helps you keep warm by the fire or fireplace and it probably would help you make and cook stews and other dishes.Without coal, all our food would be raw.
The evolution of wings and the ability to move by flying is a unique
adaptation of insects among all protostomes. During the pre-adaptation, their wings
might held the respiratory structures for greater exchange of gases or it
function as a protective shields over their leg joints.
Moreover, like
dragonflies that are unable to tuck their wings when at rest, the next
evolutionary burst is the foldable wings they have. These insects includes
locusts and stoneflies.
Answer:
To analyze the cell.
Explanation:
Make a Laboratory report for diffusion across a semi-permeable membrane by analysis of cell through experiment. diffusion across a semi-permeable membrane occurs in the cell so the cell must be studied for making report. A process in which molecules pass through a semipermeable membrane of the cell from a region of less concentrated solution into a region of more concentrated one is called osmosis. This semipermeable membrane of the cell allows small size substances to pass through it.
Answer:
\rB. nutrients that are essential cannot be made by the body, so they must be obtained from food.
Explanation:
If we look at the definition of essential fatty acids, it clearly states that these are fats which human body cannot prepare but are essential for proper functioning of body. Since body cannot synthesize them on their own, therefore we must obtain them through a diet rich in them. Two main essential fatty acids are:
- Alpha-linolenic acid (omega-3)
- linoleic acid (omega-6)
They play essential functions in body sucg as :
Production of hormones
Better adrenal and thyroid activity
Regulation of inflammatory and immune responses, function and development of brain.
Supporting the development of healthy skin and hair.
Option B is the best option.
Hope it helps!
Thank you