The answer is the first choice:
Negative feedback reverses a change in a variable that has moved outside of its normal range, whereas positive feedback strengthens it.
Feedback loops do not only apply to blood pressure. There are many examples from body temperature regulation to child birth to your AC unit at home.
There were 16 grasshoppers
Transgender is a broad category referring to anybody whose gender identity, the gender they psychologically feel like they are, doesn't match their assigned sex, the gender defined by their physical traits.
Cisgender and cissexual are the same thing. It is the opposite of transgender. While a transgender person disagrees with their assigned sex, a cisgender/cissexual person identifies as their assigned sex.
Sedimentary rocks are formed by cementation and compaction
An omnivore eats both plants and animals!
Badgers, pandas, raccoons, and dogs are examples of omnivores I think!