This printable crossword puzzle has 11 clues. Answers range from 6 to 16 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Hair colour, eye colour is an example of this variation
Body weight, height is an example of this variation
Darwin had observed these birds to come up with his theory
Darwin is well known for this theory
Changes in genes cause variation. Changes in genes are called this.
This scientist suggested that the changes that occur in an organism during its lifetime can be inherited by its offspring.
Darwin predicted the first human ancestry will be found in this continent
height is an example of this variable
blood group is an example of this variable
permanent loss in species
ecosystem, genetic and species diversity are the 3 types of this