The segment of the periodic table below shows the elements in Groups 1 through 9. What do the elements Mg, Ca, and Sr have in common?

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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.

thinking it would be d not too sure but i think it's right

b. climate change will cause an increase in biodiversity of all ecosystems.

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