Answer:
Mechanical digestion involves physically breaking down food substances into smaller particles to more efficiently undergo chemical digestion. The role of chemical digestion is to further degrade the molecular structure of the ingested compounds by digestive enzymes into a form that is absorbable into the bloodstream.
Explanation:
extinct organisms; that is, they belong to species that are no longer living anywhere on Earth. (3) The kinds of fossils found in rocks of different ages differ because life on Earth has changed through time.
FM radio waves and waves that are used in microwaves and radar are used by mobile phones.
The answer is The Nervous System.
It interacts with all the other systems, it tells them what to do.
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Answer:
The given statement is True.
A human body is composed of around 60 percent of water, the average range is around 50-65 percent.
Water is a vital nutrient for any living organism including human beings.
Being a universal solvent, it primarily helps in metabolism and transportation of proteins and carbohydrates in our body.
It helps in maintaining the internal body temperature through respiration and sweating.
It helps in excretion of waste material through urination.
It lubricates joints and acts as shock absorbent for the fetus, spinal cord, and brain.
