Answer:
Skeletal muscles are the only muscles that can be consciously controlled. They are attached to bones, and contracting the muscles causes movement of those bones.Any action that a person consciously undertakes involves the use of skeletal muscles. Examples of such activities include running, chewing, and writing.
Smooth muscle lines the inside of blood vessels and organs, such as the stomach, and is also known as visceral muscle.It is the weakest type of muscle but has an essential role in moving food along the digestive tract and maintaining blood circulation through the blood vessels.Smooth muscle acts involuntarily and cannot be consciously controlled
Cardiac muscle, Located only in the heart, cardiac muscle pumps blood around the body. Cardiac muscle stimulates its own contractions that form our heartbeat. Signals from the nervous system control the rate of contraction. This type of muscle is strong and acts involuntary
Explanation:
Answer:
The oceanic crust is formed by partial melting of the mantle at mid-ocean ridges. The continental crust is formed even more cycles of partial melting over time, resulting less dense rocks.
Explanation:
The mantle, oceanic crust, and continental crust all have different compositions due to a process called partial melting.
This is where you start to melt a rock, but don´t melt it all the way.
When you partially melt a rock, certain chemical elements tend to stay in the solid rock while others tend to go into the melted part.
As a result, the rock that forms from that melt is less dense than the original rock.
If you then partially melt that rock, you get a rock that is even lighter.
The answer is false.
Reducing carbon footprint has no effect on carbon emissions. Carbon emission is reduced by lower carbon footprints. As you read national geographic,China and USA are doing nothing to help. Instead, china tripled their coal used recently.
Everyone could get cancer, most likely people who has a bad immune system, cancer develop when cells starts to reproduce in a certain way. There’s different types of cancer.
Answer:
Water pollution is one of the most common type of pollution that leads to the deterioration of the water quality mainly due to the man-made interference. Direct and indirect pollution are two of its types. Direct pollution as the term suggests refers to the direct flow of pollutants in the water in contrast to the indirect pollution that accounts for the transport of pollutants eventually to the water body.
Explanation:
Direct pollution is characterized by the release of toxic fluid directly in the water body. The main source of this type of pollution are the toxic pollutants from the large factories. Some of the other sources includes solid waste from the household activities and waste from agricultural practice like fertilizers, and the waste generated by the waste water treatment plant.
