It produces biomass by photosynthesis
The substance with a density of 2.1 g/cm3 will sink in water, as it is denser than water (density of 1.0 g/cm3). This means that the substance will not float but will sink to the bottom of the container filled with water.
If you had the same volume of each material, lead would be heavier (something on the order of eleven times heavier!) than the same volume of water. That's because lead is more dense than water.
Molasses is denser than water, so it sinks when added to water.
It would make them heavier.
yes. for example, some liquids, the obvious being acid, would kill the plant. a plant needs water to osmose and photosynthesise.
A penny would sink in a river because a penny is made mostly of zinc, which is heavier than water. Because the penny is heavier than water, it sinks.
No a potato will not get heavier if placed in salt water, and does it really matter if it does? Do not ask stupid questions. Keep it simple.
Neither. It doesn't absorb water.
No! That would kill the plant. Water is essential for the plant to live.
1 gallon of water is heavier than 1 pound of sand. Water has a density of 8.34 pounds per gallon, so 1 gallon of water weighs more than 1 pound of sand.
It is heavier due to the fact that it contains salts and other substances dissolved in the saliva. You would say it is 'denser' not heavier.
No; water maintains a constant mass of 1 gram milliliter. If you add salt to the mix, it won't make the water heavier, although the combined weight of both salt and water put together will be greater than the water by itself. So no the water does not get heavier, your just adding more weight in the form of salt.