Which of the following statements best characterizes the disability-adjusted life year? a. a measure of the overall burden of disease on a society. b. a measure of years lost due to premature death or disability. c. it describes the yearly living conditions of people with disabilities. d. it describes the yearly effect people with disabilities have on a nation's resources.

Altocumulus, altostratus, cirrocumuls, cirrostratus, cirrus, cumulonimbus, cumulus, nimbostratus, stratocumulus, stratus 8.) clouds with tallest vertical development 9.) low altitude clouds in solid layers that produce rain 10.) high altitude thin flat layers of clouds 11.) rain clouds that form under stable atmospheric conditions 12.) middle altitude clouds with globular appearance