Take India for example.... people use the bathroom and bathe in rivers!
Now lets say we look at the US our pollution comes from factories, trash that people dont throw away, fertilizers and many more... but the difference is, that in developed countries like the US our water is filtered.... And in India water is not safe to drink
I would go with ''mechanical weathering'' since that makes rock turn smaller and smaller due to the weather.
Answer: The true descriptions regarding muscles are; Cardiac muscles and skeletal muscles are striated, heart (cardiac) and digestive (smooth) muscles are involuntary muscles, cardiac muscles work to pump blood. Skeletal muscles are the muscles that attach to the bones and their main function i contracting to facilitate movement of our skeletons. Smooth muscle are found in walls of hollow organs such as the stomach and are stimulated by involuntary action. While the cardiac muscles are found solely in the walls of the heart, they are highly specialized and under the control of the autonomic nervous system.
Explanation:
Not my work but i found this on brainly lol
They are in algebraic I think
When the egg cell is fertilized with the sperm cell, it changes into a zygote. It then becomes a morula and blastula. Then it turns into grastula and neurula where neural plate is transformed into neural tube.. Finally, it becomes a human embryo.