Answer:
A
Explanation:
A because water is a essential resource to humans and all types of life.
<span>I am a Carbon atom and I took birth in the air. I had spend a memorable time in a molecule and there were two very nice oxygen atoms too. I just got into the air and I am very excited that I had my complete incoming box of electrons. I am a carbon atom and I have six electrons. Right now I am in a carbon dioxide molecule and I am just wondering in air. While i was enjoying my journey I waved to my friends like oxygen gas which is a molecule of two oxygen atoms.Oxygen atom is my best friend. I’ve heard stories of becoming solids and many different things when i was too young, but now I just like the air and I am loving it.</span>
Answer:
D
Explanation:
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Smooth muscle is the type of muscle tissue responsible for propelling food along the digestive tract.
Smooth muscle is a type of muscle tissue that can be found in the walls of hollow organs of the body such as the digestive system, urinary tracts, tubes such as blood vessels and reproductive system. Smooth muscles contracts involuntarily and allows the walls of organs to move. The layer of smooth muscle present in the digestive system helps to break down food and propel it along the tract. Food substances and liquid moves from one organ to the next through the muscle action.
<span>The respiratory system deals with the body's breathing system, including the mouth, throat and lungs. An example of something the respiratory system doesn't do is anything with the digestive system. The digestive system consists of the mouth, throat, stomach, intestines and colon. It processes food and liquids into nutrients and energy for the body.</span>