What organ produces a variety of enzymes URGENT

Idon’t know how to solve this question

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

How have the greenhouse gasses increased from the year 2000 to 2018