In cells, hydrogen proxide is converted to water and oxygen through the activity of

enzyme catalase

Explanation: When the enzyme catalase comes into contact with its substrate, hydrogen peroxide, it starts breaking it down into water and oxygen.

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.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.