Charles Darwin, is the scientist is the father of evolution
Answer:
The moon, sun, river, clouds, mountain, rain, water and so on.
A double layer of phospholipids
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!!
