Describe the relationship between predator and prey in a balanced ecosystem. hellppp.

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture

Match the mixture with the substance// i really need on this guys (it’s a pic btw)

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.