I believe Biotic factors is the term for living organisms & Abiotic factors is the term for Non- living factors such as water , air , temperature & soil .
It's option D because both are depending upon each other (interdepending) for their needs.
No, he is not correct. Xenon is not very reactive since it is located in the group of noble gases.
Because, when more species start to become extinct it disrupts the balance of the earth. For instance if spiders became extinct, the numbers of insects would exponentially grow. Which will become a problem for farmers, and more diseases would most likely occur.
