The Earth was first considered habitable when we discovered that it was Microbial organisms that started the process. I would go with D.
In general terms, “sex” refers to the biological differences between males and females, such as the genitalia and genetic differences. “Gender” is more difficult to define, but it can refer to the role of a male or female in society, known as a gender role, or an individual's concept of themselves, or gender identity.
Answer:
Inherited traits.
Explanation:
Inherited traits are ones passed down from parent to offspring!
