What does this mean: solute + solvent = solution​

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.

Plz quick a natural resource that is replaceable through a cycle in nature or sustainable practice is called a? the subject is science