If a deep ocean fish moves close to the oceans surface which of the following conditions must it be able to live in? a. more sunlight and higher pressures b. lower pressures and higher temperatures c. less sunlight and lower temperatures d. higher pressures and lower temperatures plz

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