C.energy
The law of conservation of energy says that energy can neither be created nor destroyed.
Hello!
<span>The air inside the building is easily pressed out the windows because the air is composed of widely spaced molecules in the gas phase.
The word "gas" was created by the Netherlandish scientist Jean Baptista van Helmont from the Latin word "chaos". The gas phase consists of molecules with high kinetic energy, that adopt the shape of the container and tend to expand. The molecules are essentially free, and the gravitational pull on them is negligible.
Have a nice day!</span>
1. Both include produces and consumers
2. both represent flow of food and energy
I'll try to think of another
Answer:
Transfer of molecules due to density-difference resulting from increased temperature of the layers of fluid bulk leads to convection.
Explanation:
When a mass of fluid is heated form the lower layers then due to the variation of the density of the fluid at different temperature we observe the movement of molecules leading to convection.
- When the lowest level of the fluid is heated it gains temperature and the molecular bulk expands on heating and its density becomes low with respect to the bulk fluid around it and hence it flows upwards to the top most layer being lighter in weight and the lowest layer is occupied by the subsequent colder and denser layer.
- Then again the lowest layer is heated and the process continues forming a cycle heating through the bulk transfer of fluid layers called convention.
