Answer:
In the muscular system, muscle tissue is categorized into three distinct types: skeletal, cardiac, and smooth. Each type of muscle tissue in the human body has a unique structure and a specific role. Skeletal muscle moves bones and other structures. Cardiac muscle contracts the heart to pump blood.The 3 types of muscle tissue are cardiac, smooth, and skeletal. Cardiac muscle cells are located in the walls of the heart, appear striated, and are under involuntary control.
Explanation:
Igneous: these rocks are volcanic in nature. They are split into two categories in where they cool/crystallize: intrusive (internal) and extrusive (external). Intrusive volcanic rocks cool slowly, so they contain (usually) large crystals, like granites. Extrusive rocks are quite the opposite, in which they cool very quickly. This is where you get your obsidian glass and basalts.
<span>Sedimentary: these rocks are depositional and categorized by the kind of sediment it is made up of. </span>
<span>Metamorphic: this can be the offspring rock of either a morphosed igneous or sedimentary rock. This metamorphism is accomplished by heat and/or pressure, and during a great length of time. </span>
Each organism is suited to its own environmental niche. So if the temperatures were to suddenly change, then the organism of that species with the maximum or at least a few variations will be able to survive while the others perish, thus resulting in evolution of the species. This ensures that the species is not wiped out if the environmental conditions of a place or region were to suddenly change,
For example, imagine a particular type of bacteria lives in a pond. Some of these bacteria have variations that allows them to survive in harsh weather conditions. Now, imagine the temperature of the water were to drastically increase due to global warming. Then the bacteria with the variations will be able to supervise and carry on the species.