Which statement about ecosystems is true? 1.ecosystems are always a few square meters at most. 2.ecosystems are exactly one square kilometer. 3.ecosystems are always larger than a biome. 4.ecosystems are always smaller than a biome. this is for science but couldn't find a choice for that. i will give brainliest.

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