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Zoology Vocab 2

Across
Best adapted have more offspring
Single Cell no nucleus
All organisms share the same ancestors
Stuctures that are simmilar in two or more organisms
Backbone
Cellulose and autotrophic
No Backbone
Classification
Explosion that created the Universe
Gives cell shape and protection
Down
Organisms that don't fit into other kingdoms
Cell wall made of chitin
Molecule with instructions for life
Characteristics of two or more groups
Remains of dead organisms
From which two or more species evolved.
Consume other living things for food
Makes own food from sun
Organisms changing over time
Study of animals
Characteristics for survival