Okay so nothing equals nothing so after that you get nothing
They are both important because mechanical has to do with physical - cause mechanical means physical, so chewing your mouth is physical (you break your food into smaller pieces physically). And then chemical digestion is when food and saliva mix together. They happen when breaking down food into nutrients - enzymes. Enzymes are important for that process, because they make a nutrient.
Hope this helps!!
The flower would be Genotype
<span>The correct answer is a unilinear evolutionary theory.</span>
<span>According to this theory, all societies would pass through the same basic stages, although the speed of transition might vary. The unilinear theory is a social theory, whichconsidersr that Western culture was the most evolved one.</span>
