A compound is a pure substance composed of two or more different atoms chemically bonded to one another. A compound can be destroyed by chemical means. It might be broken down into simpler compounds, into its elements or a combination of the two.
Primary:
Grasshopper
Mouse
Grass
Secondary:
Hawk
Snake
Coyote
A is your answer The ratio of females to males
Carbon is stored in the ocean
'The Sedimentary rock formed from years of sediments piling on top of it and being compressed.'
