A piece of wood weighs 72 g. What is its density
if its volume is 20 cm'?​

desnity is equal weight divided by volume ,so 72/20= 3.6

Explanation:

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preservation because he preserves part of the land and preserves means save

explanation:

economic impact of malaria is estimated to cost africa $12 billion every year. this figure factors in costs of health care, absenteeism, days lost in education, decreased productivity due to brain damage from cerebral malaria, and loss of investment and tourism.