<span>Vertebrates
are known to be animals with backbones.
The following are the evolutionary changes of vertebrates:</span>
*Jaws
- Fishes before sucked and rubbed on their preys but now, they already have
jaws that enable them to more efficacious in getting their preys.
*Lungs
and limbs - Animals on the sea need to adapt when they look for their preys on
land, in turn, they had evolved to acquiring lungs for breathing and limbs for moving.
*Endothermy
- ‘Endo’ meaning internal and ‘therm’ meaning temperature. This gave animals’
bodies heat supply from burning the food they eat.
<span> </span>
The answer is (b.) ecosystem. An ecosystem is all living organism in an area functioning together with nonliving factors of the environment. An Ecosystem is a community of the living organism that includes the producers, the consumers, and the decomposers.
Proteins help with acting as structural components in the body, speeding up chemical reactions, and transporting substances around the body. Proteins are made up of amino acids, which create enzymes. Enzymes are often affected by environmental factors in the body such as concentration, temperature, and pH.
Proteins are very important for DNA and RNA. (ribonucleic acid)
Hope this helped
