do rocks and twigs contain water?
487819
twigs usually have water. Its possible to dry them out.\n\nRocks can be porous enough to trap water inside them.
91850
Also not mentioned... almost anywhere there's water.  That includes the upper atmosphere, the air you breath, living inside of plants and even cells, antartica, from the bottom of the ocean to the surface, in everything you eat, inside rocks; the list goes on.
209349
Not a whole lot... but I can see how. Fluid in some plants can be electrolytic.
210582
Hygroscopic materials don't necessarily attract moisture from the air, but they do trap it. Each material is different, but typically the smaller water molecules become lodged in larger pores or crevices between the larger material's molecules.\n\nA good place to start is Wikipedia.
90328
I believe if you cover the leaves on the branch, still attached to the tree, with a plastic bag. Tie the end of the plastic bag shut with string or a rubber band so the leaves are enclosed inside the bag. When the moisture from the leaves evaporate it will collect in the bag, safe to drink.\nCome on already.
142108
Moss needs lots of moisture and little direct sunlight.  The soil needs to be relatively low in iron.
53458
Plants take in oxygen, carbon dioxide and water, and produce sugar which contains carbon, oxygen and hydrogen atoms from all three. So they use more water than they put out. In fact, I don't believe they "exhale" water the way we do at all,
84859
There are three ways actually:\n1. Rainwater soaks into the ground. Almost all soil will allow water to soak in and as it goes downward it encounters rock which also has small holes called pores that water can soak into. This is how water gets into wells that we drink from or use for irrigation. \n\nThe other two types do not always fit the definition of 'groundwater' but are found beneath the earth's surface:\n\n2. When rocks like sandstone are formed, they are mostly formed (deposited) beneath the ocean or under a river delta. They are filled with water when they form and this water is often trapped there by sediments like clay that deposit over the water filled sandstone. This water is often saltwater. \n\n3. When some rocks deep in the earth undergo a process called metamorphism they chemically expel water. Many rocks have water bound up as part of their chemical content and when this rock changes from pressure or heat the water is released. Some types of clay will also release water that is bound up chemically in the clay when they are buried and under higher temperature and pressure.
374011
It doesn't if the substance that is being tested is a liquid.  If the substance is a solid, then you need water to facilitate the interaction between the substance and the litmus.
385501
mostly mineral, you'll probably find sodium chloride (salt) in it, but it depends on which water body is evaporated.
25254
Yes - higher and lower pH's and different mineral contents affect plants. The safest bet would be to get the plant in the right conditions, and then water with the purest water available, preferably distilled.
626745
True. water is essential for the transport of nutrients within them, since it is the "universal solvent".
831727
Both are present in small amounts in soils and rocks.  Spillage from waste dumps can be a source also.
187526
It depends on how much water is displaced by the stone and log. The stone and log will be buoyed up by a force equal to the weight of the water displaced.
58575
These features you're noting, like rivers and oceans, are on the Earth's surface on a layer called the crust.  Lava is molten rock that exists UNDER the crust in a second layer known as the mantel.  The water doesn't 'cool down' the lava because it is seperated by a thick layer of rock.
133937
This is more of a biological question, but as water enters soil, a plant's roots will essentially "drink" the water and provide the plant with it. The process of how the plant takes in the water is unknown at least to me.
112622
Although water is required for photosynthesis the amount of water actually required is tiny, almost immeasurable even in large tree. In contrast a large tree will use hundreds of gallons of water every single day. More importantly a plant that is in the dark will die without water just as fast as a plant in full sunlight. Since photosynthesis can't occur in the dark we know that it can't be photosynthesis that  most of the water is required for.\n\nPlants need water for three main reasons, the first two are  exactly the same reasons that you need water. \n\n1) Water serves as the solvent for every chemcial reaction that makes up life. Without water life simply isn't possible because no chemical reactions assocaited with life can occur.\n\n2) Water is also essential for transporting nutrients around the plant, so minerals are taken from the soil to the leaves dissolved in water, and sugars are taken from the leaves to the roots dissolved in water.\n\n3) Plants use water to maintain their very shape. The cells themselves are held in shape by the pressure of the water inside them, like water-filled balloons. Without water the cells shrink and collapse, and we see this as the plant wilting. If the collapse goes to far t5he cells tear and that part of the plant dies.