Answer:
Question 1: over 4.5 billion years all the above
Question 2: all the above
Question 3: The force of gravity pulled more and more material into the center of this swirling disk. Eventually, the pressure in the center was so great that hydrogen atoms began to combine and form helium, releasing a tremendous amount of energy.
Question 4: core is made up of heavy elements, such as iron and nickel, and lighter elements, such as potassium and sodium make up the surface.
Question 5: The process through which distinct layers with characteristic chemical and/or physical properties are formed
Explanation:
Answer:Operant conditioning (also called instrumental conditioning) is a learning process through which the strength of a behavior is modified by reinforcement or punishment. It is also a procedure that is used to bring about such learning.
Explanation:
Answer:
D: T.J.’s relationship with Cassie shows that trust is necessary before a strong friendship can develop.
Explanation:
It's always the cheesiest answer
The Earth goes around the sun in approximately 365 and 1/4 days.
Answer: A description of the appearance of a work expressed in generic terms, without reference to the subject depicted
hope this helps <em>:)</em>
