1. Trachea itself is not considered a complete organ. It is a part of the breathing system and the only airway to the lungs.
2.Yes rigid organs.
3. Rigid organs constitute part of the endoskeleton of vertebrates.
It has changed their economy because without space exploration, we wouldn't have such advanced technologies. They have given jobs to many people due to a new workforce. It has changed cultural views so we now understand space better
Answer: The digestive system metabolizes (breaks down) food using enzymes. The small intestine helps absorb 1.water and 2.nutrients necessary for life!
Explanation:
Both of these options are valid scientific hypotheses because the scientific debate is always continuing, and the scientific community never discards a hypothesis. The correct option is C.
<h3>What are the hypotheses?</h3>
A hypothesis is a statement that is constructed before a scientific experiment. They are the data made before collecting the variables from the site.
Like here, the hypothesis is made for reducing the population of shrimps.
Thus, the correct option is C. the scientific debate is always continuing, and the scientific community never discards a hypothesis.
To learn more about hypotheses, refer to the link:
brainly.com/question/18064632
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