Answer:
Respiratory system and circulatory system.
The respiratory system allow living things to obtain oxygen from the air while the circulatory system allows oxygen to be carried around the body.
Answer:
The measures which is taken by country need to prevent global warming are given below.
1) The government of the country should planted more trees because plants are only organisms which reduces the concentration of harmful gases which causes global warming.
2) Reduce the use of fossil fuels such as petrol, coal and methane gas.
3) Use solar energy instead of fuel for the production of electricity and other industrial products.
Arthritis
Arthritis is a joint disorder in
which there is inflammation of one or more joints. Arthritis is frequently accompanied by joint
pain. There are many types of arthritis and over 100 have been identified. The causes
of arthritis include injury, metabolic abnormalities, hereditary factors,
effect of infections, and a misdirected immune system. Arthritis is mostly
common among women and occurs as people get older. Severe arthritis can result
in chronic pain, inability to do daily activities and can cause difficulty in walking.