C I believe because they are living so they are able to breath
They converted carbon dioxide to oxygen. The increased oxygen levels allowed for cellular respiration to occur instead of only glycolysis. The atmosphere became thinner, decreasing temperatures of the planet as well.
The cns along with pns are bth involved in physical sensation along with the brain and spinal cord
Answer:
Explanation:
Genetic variation in a group of organisms enables some organisms to survive better than others in the environment in which they live. Organisms of even a small population can differ strikingly in terms of how well suited they are for life in a certain environment. An example would be moths of the same species with different color wings.
Esters are named as follow,
First the group which has replaced the Hydrogen atom of hydroxyl group of carboxylic acid is named. Like in In Phenyl propionate, Phenyl is written first as it is substituting -H of Propionic acid. Secondly the name of carboxylic acid is written with replacing the end
-ic acid with
-ate. Like -ic acid in propionic acid is replace by -ate i.e propionate.
Second example is also named according to above mentioned rules.