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True.
The gravel and sand filter out smaller particles from the water
No, the gravel sinks when placed in water and is therfore more dense than water. This means that given two equivalent volumes one of water , one of gravel, the mass of the gravel will be greater than that of the water.
There is no optimum between 00C and 1000C.
You can use a coffee filter in first than put your water in than the gravel and that is how you separate gravel and water...:) or you can get a screen like a drainer and pour all of your gravel and water in that.....:)
Sun and water
Water,optimum temperature,oxygen,certain ions and enzymes are needed for cellular respiration.
The water is compacting the flour.
No, it does not.
The Gravel will absorb the water until it can absorb anymore.
True.
The amount of time that gravel can retain water will vary depending on its state. Fine gravel will holder water for long as opposed to coarse gravel.
Gravel is practically insoluble in water.
The weight of water presses down on plant remains, compacting them.
Optimum temperature Water Food O2 Energy (light or food ) Space to live .
The main disadvantage of compacting concrete using a cement vibrator is the noise. The advantages of compacting concrete using a cement vibrator is to remove trapped air and excess water which then allows the concrete settle firmly.
The gravel and sand filter out smaller particles from the water