The adaption of jaws allowed organisms to survive and reproduce because it allowed them to obtain food and fight off any predators.
The skeleton strengthens your body which allows your body to be more physically active. This helps outlast predators and obtain food.
The adaptation of a heart pumps and circulates your blood which allows for organisms to continue living.
Having two limbs come off your body such as arms and legs aid in the ability to grasp/hang on to things which helps you hold on to valuable food to live.
Tetrapods have four legs which can help them survive by being able to run and attack.
Gills help aquatic organisms survive because they take in oxygen needed from water and gives out carbon dioxide.
Lungs are an essential respiratory system for air breathing organisms. Without it, they wouldn't be able to survive and reproduce.
Internal fertilization is needed for reproduction because it involves the insertion of the penis into the vagina which fertilizes eggs.
External fertilization is needed for reproduction because it is when a sperm cell is united with an egg cell outside of the reproducing organisms.
Amniotes lay a hard shelled egg that are specifically adapted to survive on land.
The eggs they lay lack an amnion which is best adapted for survival in water because it helps with waste.
These organisms are the same temperature as their outside surroundings which is a good adaptation since they are always comfortable with their environment which allows them to survive.
The body temperatures stay around the same temperature which is generated by that organism. Having a body temperature allows an organism to stay warm and function to obtain food.
Hair can provide heat or cooling to a organism which allows them to be suited in their environment and survive.
Females have this organ to be able to produce milk and feed their young ones. This adaptation is essential so the young ones can survive.