Answer:
Option A, oxygen in the atmosphere
Explanation:
The highest level of oxygen reached during this phase of the geological cycle of earth. The oxygen level in Carboniferous period accounted for 35% as compared to 21% of oxygen in the atmosphere in present time.
Due to high oxygen content, the giant and wide varieties of terrestrial animal and plant species evolved. For example – size of insects and carwlies increased, plant became extremely giant, increase in number of tree ferns etc.
Answer:
The mixing of fats with water, assisted by molecules that have both nonpolar and polar ends, is called <u>emulsification</u>
Hope that helps!
Firs one for food poisoning is surgery.
A bacterial cell is compared to a virus because it could possibly kill you.
Nose, hair ears and mouth.
