The chart seen here show the decay of a sample of carbon-1h over a period of 3500 years. What is the approximate hallide of cate 10
A)
11.900 years
16,500 years
D)
3000 years

the growth of the plants is affected by the heat of the light. what is the student doing?

these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.