Mountains. The ocean ridges form a great mountain range, almost 40,000 miles (64,000 km) long, that weaves its way through all the major oceans
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Answer:
mortality rate, measure of human infant deaths in a group younger than one year of age. It is an important indicator of the overall physical health of a community. ... High infant mortality rates are generally indicative of unmet human health needs in sanitation, medical care, nutrition, and education.