Premineralization.
The process you are referring to is called mineralization. It occurs when mineral substances such as calcite, quartz, or pyrite precipitate into the pore spaces of rocks or sediments. This can result in the formation of mineral veins or cementation of porous rock formations.
Plants that have air-filled spaces in their tissues are likely to be aquatic or semi-aquatic plants. These air spaces help the plant float in water and provide buoyancy, allowing them to access oxygen for underwater respiration. Examples include water lilies, water hyacinths, and pondweeds.
A lightweight bone filled with spaces is likely to be a cancellous or spongy bone. This type of bone tissue has a honeycomb-like structure with many small cavities that are filled with bone marrow. Cancellous bone is found at the ends of long bones and in the interior of flat bones.
Vacuoles are fluid-filled spaces in cells that store water, nutrients, and waste products. They help maintain turgor pressure in plant cells and can also act as storage compartments for food and other substances in various types of cells.
The spaces between leaf veins are called interveinal areas. These areas are usually filled with chloroplasts, which are responsible for photosynthesis. The arrangement of veins and interveinal areas in leaves is important for nutrient and water transport.
The fossilizing process that replaces organic matter with silica or calcite is called permineralization. In this process, minerals such as silica or calcite fill in the pore spaces of the original organic material, creating a fossil with fine details preserved.
If the basalt flow contains air bubbles and pockets and there is a spring that contains silica then the silica can deposit into the air bubbles (the air bubbles are known as Amygdaloidal basalt or vesicles) If the silica deposits slowly and the conditions are correct then precious opal can form. Two examples of this would be in California at the Nowak and the Barnett mines.
You have what is known as permineralization preservation when tiny spaces inside a fossil are filled in with minerals. This process can result in the fossil being preserved in great detail, often retaining the original structure of the organism.
the bones are filled with bone marrow
The answer is bones. Bones are filled with marrow and have air spaces to make them lighter in weight.
The process by which lithospheric plates move apart, creating spaces that are filled with hot magma, is called seafloor spreading. This occurs at mid-ocean ridges where new oceanic crust is formed as magma rises from the mantle and solidifies at the surface.
Birds.
Saturated
The process you are referring to is called mineralization. It occurs when mineral substances such as calcite, quartz, or pyrite precipitate into the pore spaces of rocks or sediments. This can result in the formation of mineral veins or cementation of porous rock formations.
The level at which all spaces inside underground rock are filled with water is called groundwater. It contains 21% of the world's freshwater supply.
The fluid filled spaces in the brain are called ventricles. The fluid is called cerebrospinal fluid
No, the brain does not have empty spaces. It is mainly composed of brain tissue, which includes neurons, glial cells, and structures such as ventricles that are filled with cerebrospinal fluid. Any empty spaces within the brain are typically filled with either fluid or tissue.