minerals
The urinary bladder is a hollow organ, which means it has empty space inside that can expand to store urine.
it is true.
A geode. Geodes are spherical to oblong rock formations that contain hollow cavities lined with crystals such as quartz, amethyst, or calcite. They form as gas bubbles in volcanic rock or in sedimentary rock.
The hollow core of a needle is called the lumen. It is the open space inside the needle through which fluids are drawn or injected.
A mold fossil is a type of fossil formed when an organism or plant decomposes or is buried in sediment, leaving an impression or hollow shape in the rock. The mold is created when the organic material decays and leaves behind a cavity that is later filled with minerals, preserving the shape of the original organism.
The Answer to this is mold. It leaves a hollow space in the fossil so you can see the formation.
The hollow space behind the nose is called the hot dog sinus
No Mount Everest is solid rock and not hollow
is deep space
somttimes crystals, sometimes (mostly) more rock
A hollow rock with crystals might be called a geode. A geode is a type of sedimentary rock that has crystals formed inside due to volcanic heating and cooling or by other chemicals seeping into the rock.
Wolves don't have nests; they have dens. The dens need to be nearby a stream or other water source. Some examples of a den are: deep hollow riverbank, cleft between rocks, hollow log, space under an upturned tree, and a space under a rock overhang.
a cavity,opening,or space within somethingwhen something is hollow t has nothing inside it (when a tree is hollow it is empty)
Oil shale rock
a cavity,opening,or space within somethingwhen something is hollow t has nothing inside it (when a tree is hollow it is empty)
Hollow spheres in limestone rock are called vugs. Vugs are formed when a cavity in the rock is later filled with minerals or crystals. They can vary in size and shape and are often sought after by collectors for their unique beauty.
The urinary bladder is a hollow organ, which means it has empty space inside that can expand to store urine.