Tiny crystalline structure are usually found in magma when it cools off on earth's surface. A mixture of molten rocks, volatiles and solids that is beneath the earth's surface is called Magma. When the magma rises at the earth's surface and begins to cool off it is now called "lava".
Urban diseases and causes or mortality are more likely to be those spread by person to person, crowding.
Answer:
The nucleus is a cell's central organelle, which contains the cell's DNA (Figure 3.6). The cytoplasm is composed of two parts, the cytosol and organelles. Cytosol, the jelly-like substance within the cell, provides the fluid medium necessary for biochemical reactions.
Explanation:
Rocks are identified primarily by the minerals they contain and by their texture. Each type of rock has a distinctive set of minerals. A rock may be made of grains of all one mineral type, such as quartzite. Much more commonly, rocks are made of a mixture of different minerals. Texture is a description of the size, shape, and arrangement of mineral grains. Are the two samples in figure 2 the same rock type? Do they have the same minerals? The same texture?
Explanation:
