Students of different ages were given the same math test. Researchers looked at the number of correct answers on the test.
what is the independent variable

Iwould say overuse ( but not 100% sure ) in the u.s. we tend to overuse water by leaving it running, throwing it away, taking long showers, etc.

It would be c. because they are the same species. the definition for genus is a principal taxonomic category that ranks above species and below family, and is denoted by a capitalized latin name

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.

 

Do you have the picture?