Answer:
Please see my answer below.
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Explanation:
<em><u>The endosymbiotic theory states that some of the organelles in eukaryotic cells were once prokaryotic microbes. Mitochondria and chloroplasts are the same size as prokaryotic cells and divide by binary fission. Mitochondria and chloroplasts have their own DNA which is circular, not linear.</u></em>
A law is something that can be measured or observed to be true. A theory, is something that can be assumed to be true based on the best available knowledge.
Plutonium. The others are fossil fuels.
An agent or factor that causes malformation of an embryo.
Yes, the trachea would collapse in this situation.
The trachea is a tube composed of cartilage which connects the pharynx and larynx to the lungs. It is a critical structure for all air-breathing animals and its main responsibility is to facilitate the passage of air. The trachea is surrounded by several c-shaped and incomplete cartilaginous rings which prevent it from collapsing.
