The answer is <span>Chemical digestion involves the breaking down of food with enzymes; </span><span>mechanical digestion is breaking down food by chewing and tearing with teeth.
Mechanical digestion means breaking down food mechanically. By chewing and tearing with teeth, food breaks down into smaller parts and no enzymes are used. Chemical digestion means breaking down food in a chemical manner. This is achieved by secreting enzymes, which break down chemical bond between food molecules.</span>
The Best answer to the question stated above is "Chemical digestion involves the breaking down of food with enzymes; mechanical digestion is breaking down food by chewing and tearing with teeth. "
Mechanical digestion prepares food for chemical digestion. It involves the chewing and mixing food with saliva, churning of food in the stomach, segmentation of intestines rhythmic local constrictions of intestine, causes mixing improves absorption. On the other hand c<span>hemical digestion breaks down complex food molecules into chemical building blocks, enzymes secreted into alimentary canal lumen.</span>
<h3><em>Food</em><em> W</em><em>e</em><em>b</em><em>s</em><em> </em><em>show how plants and animals are connected in many ways to help them all survive. F</em><em>o</em><em>o</em><em>d</em><em> </em><em>Chains</em><em> follow just one path of energy as animals find food</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em></h3>
Environmental change results in the environmental ecosystem to be able to adapt to a new environment to survive the impact of environmental change can cause a decrease in the amount of organisms living in that ecosystem and without one of the organism living in the ecosystem the other organism supports on the other organism for food/energy will be scarce resulting in a decrease of species eventually dying out.
