Because our brains are the most developed out of all of the other species on this planet. Also, we require the most maintenance to survive. We can’t live in the ocean, such as a fish, shark, dolphin, etc. but we also can’t live in the forest such as bears, deer, coyotes, etc. we need to live in a stable environment when we will have enough food to survive as well to live in certain temperatures that are best suited for our kind. Hopefully that helped a little bit
A biological system is a complex network of biologically relevant entities. ... Examples of biological systems at the macro scale are populations of organisms. On the organ and tissue scale in mammals and other animals, examples include the circulatory system, the respiratory system, and the nervous system. source: google
Explanation:
<h2>They are aquatic — found in moist or wet places.</h2>
<h2>They are autotrophic, and the reserve food is generally Starch.</h2>
<h2>They consist of a cellulose cellwall around their cells.</h2>
<h2>Mechanical and conducting elements are absent in thallophyta.</h2>
<h2>Plant body is thallus, not differentiated into root, stem and leaves</h2>
"From the dog" is the prepositional phrase since it begins with the preposition "from" followed by the noun phrase "the dog" .
