The human organs are also called hollow organs because they have an empty tube or pouch. Examples of hollow organs include the stomach, intestine, and the heart.The eye is an organ that is generally considered part of the nervous system.Other organ systems in the human body include the immune system and the lymphatic system.The small intestine is actually much longer than the large intestine.<span>Some scientists say that the liver performs as many as 500 different functions.
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Scientific method is your answer to your question
Competition is an interaction between organisms or species in which both the organisms or species are harmed. Limited supply of at least one resource (such as food, water, and territory) used by both can be a factor.
stem cutting
► planting a portion of an immature cane's stem as a seed into the roots.
To warm your muscles up and stretching.
