evolution
The gradual change in a species over time evolution
evolution
fight infection
white blood cells
Main organs of the respiratory system
Lungs
A very long molecule that carries the genetic code for all living organisms
DNA
a species that no longer has any known living individuals.
Extinction
Blood cells that carry oxygen from the lungs to the body cell
red blood cells
two short branches located at the lower end of the trachea that carry air into the lungs.
Bronchi
When one parent makes offspring identical to itself
Asexual Reproduction
The variety of different types of genes in a species or population
Genetic Variation
Muscle of the heart
cardiac muscle
windpipe
Trachea
Cell division that creates 2 identical cells.
Mitosis
Earth's history as revealed by layers of rock
Geologic Time
clots blood
Platelets
A flap of tissue that seals off the windpipe and prevents food from entering.
Epiglottis
The cell division that produces identical cells in prokaryotic organisms (bacteria)
Binary fission
diagram showing evolutionary relationships of organisms with a common ancestor
Phylogenetic Tree
high blood pressure
Hypertension
inflammation of the bronchial tubes
bronchitis