These are cows examples of Endotherm.

 After a long workout your body must find a way to equalize your body temperature. That is when you begin to sweat which is an example of Homeostasis.

That is a nest in the lights which is an example of Predation.

That is oil in a bottle of water to show it is Hydrophobic to water.

That is soap in a bottle of water to show it is Hydrophilic.

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