The excretory system also works with the respiratory and circulatory systems and removes carbon dioxide (CO2) from the body. These three systems work together and maintain oxygen homeostasis by making sure that CO2 is removed. The excretory system also maintains fluid homeostasis.
Explanation:
Mainly in ecology all the living and non living things are include so water must be in ecology as it is non living thing
The type of mutation which is observed here is substitution mutation. According to the fact that sickle cell anaemia is occuring at the at beta-globin gene, the correct answer is c.substitution mutation as it shows mutation point as <span>a single base. Hope it will help! Regards.</span>