There are 11 in total systems in human body containing their specific organs hence are called as organ systems.
Explanation:
These are muscular system, digestive system, integumentary system, skeletal system, circulatory system, respiratory system, lymphatic system, endocrine system, excretory system and reproductive system. All these systems contain their specific organs. However, these systems are somehow related to each other.
These are muscular system, digestive system, integumentary system, skeletal system, circulatory system, respiratory system, lymphatic system, endocrine system, excretory system .
The muscular system, in vertebrates, is controlled through the nervous system, although some muscles, like cardiac muscle & muscles in stomach walls, can be completely autonomous. Digestive system breakdown the food and absorb nutrients from it. Integumentary system act as a barrier, protect the inner stuff of body, regulate body temperature and also eliminate waste(e.g sweat). Skeletal system supports the body and protect the internal organs(e.g rib cage protect heart and lungs). Circulatory system help to transfer blood, nutrients, hormones, oxygen and other gases to and from different body parts. Respiratory station of gaseous exchange i.e O 2 in and C O 2 out of the body. The respiratory tract is the path of air that starts from the nasal cavity and end in smaller alveoli in lungs. It's major role is in breathing, no doubt an inevitable process.
I think its harmful, because its unhealthy for workers and its harmful to the environment and to the people. Its also a waste of water and it pollutes the air.
The history protein H2A, H2B, H3 and H4 forms an octamer ( 2 each of the four histones) around which the DNA is wrapped. They help in packaging the DNA allowing for compaction of the DNA
Linker histone H1 and a length of DNA (linker DNA) links two nucleosomes together and they also play essential role in chromatin strucrure, stabilizing it and also modulating accessibility of the DNA to biological processes.