<span>The second atmosphere was formed by outgassing. This means that volcanic eruptions that released CO2, N2O, and H2O aided in forming this atmosphere. The gases, that come from the melting of the Earth's crust, were released into the air after the volcanic activity.</span>
Answer:
C. 48
Explanation:
Simple thing to bear in mind; The number of neutrons is equal to the Atomic number - the Mass number. Because the Atomic number tells you the number of Protons, whilst the mass number tells you the number of both PROTONS and NEUTRONS. So 84 - 36 is 48. You have 48 neutrons
Answer: If an object is accelerating, then Force = Mass x Acceleration. If it is moving at a constant speed, then Kinetic Energy = 1/2 mass x velocity squared but in this case, there is no force acting on the object. Perhaps this will help understand the relationship between force and mass. Force is anything that acts on an object, from a person pushing on something to gravity holding the Earth in orbit around the Sun, to cause it to change speed or direction. If there is no change in speed or direction, then no force is acting on it. This relates to mass in the following way. THE GREATER THE MASS, THE GREATER THE FORCE NEEDED TO MAKE THAT MASS CHANGE SPEED OR DIRECTION. Think of it like this; what takes more force to push up a hill, a car, or a bicycle. The bicycle has less mass and therefore requires less force to push it.
Answer:
In general, life needs to maintain a pH level between 05-8 ( second choice)
Answer:
A closed circulatory system is one in which blood flows though a system of blood vessels throughout the body.
