Explanation:
A model is used to help scientists visualise things that they cannot actually see. It can be thought of as a thinking tool, to help form explanations. Models are useful simplifications to aid understanding. ... It can then be used to explain further phenomena and to make predictions of future behaviour.
Answer:
Compounds are made up of elements that are chemically joined. Like elements, compounds have properties that allow us to identify them. Learn about physical properties, like color, odor, melting point and boiling point, as well as chemical properties in this lesson.
Explanation:
I hope that help you out okay.
Barack Obama was elected president in November of 2008. He was sworn in January 20, 2009.
I would say A or C I’m not sure but if I had to choose A or C my best guess would be A
I hope this helps :)
