Plants dont move around so why do they need energy

Identify the youngest layer in the figure ( have to click one letter)

High human population have had a negative effect on what issue? a. demand for consumer goods b. ability to staff armies c. business profits d. biodiversity

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