Why does the amount of energy decrease if energy can not be created or destroyed?

Cause it gets consumed and turned into other types of energy

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex

the answer to the blank provided is “an autosomal gene that is required for the expression of genes on the x chromosome”.

testis-determining factor, abbreviated as td, which is more popularly known as sex-determining region y or sry protein, is a dna-binding protein or  gene-regulatory protein/transcription factor, encoded by the  sry gene. it is the gene responsible for the initiation of male gender determination in humans.