Answer:
Option-2
Explanation:
Endosymbiosis theory explains the origin of the eukaryotic organism from the prokaryotes by observing the mitochondria and Chloroplast as evidence.
The endosymbiosis theory proposed that a protoeukaryote engulfed the autotrophic bacteria which evolved into the chloroplast and a chemotroph which evolved into the mitochondria.
These events could have taken when the autotrophic bacteria started using carbon dioxide and produced oxygen in the atmosphere that is around 541 million years ago.
When the concentration of the oxygen increased then the mitochondria would have used this toxic gas to produce energy and the chloroplast also formed a symbiotic relationship at that time.
Thus, Option-2 is correct.
Answer:
The knee
Explanation:
The thoracic cavity is the chest cavity and the knee is the most distal
let u=speed of flow
A x v = n x a x u then u = A x v/ n x a
A scientist is someone who studies science. In other words,if you want to get technical, its a person who is studying/has expert knowledge of certain natural and/or physical sciences.
~Hope this helped
The drawing of a cat is an example of a 3-D drawing as applied in biology.
<h3>What is 3-D drawing?</h3>
A 3-D drawing is such the height, depth and the width of the object ios shown. Three dimemsional drawings are common in architechture as well as in biology.
Hence, the drawing of a cat is an example of a 3-D drawing as applied in biology.
Learn more about 3-D drawing: brainly.com/question/21333148