Answer:
An element contains just one type of atom. A compound contains two or more different atoms joined together. A mixture contains two or more different substances that are only physically joined together, not chemically. A mixture can contain both elements and compounds.
Answer:
The force of the atmosphere 200 KN.
Explanation:
Pressure is the ratio of force applied to the area to which the force is applied.
i.e Pressure = 
But, Pressure = 100000 pa (100000 N/
), and surface area = 2.0 
Thus,
100000 = 
⇒ Force = 100000 x 2.0
= 200000
Force = 200 KN
The force of the atmosphere 200 KN.
Answer:
D
Explanation:
because if a flea is on a dog that is a parisite to host relashionship