Well for starters, producers are living organisms that produce their own food. Like plants. And plants ironically provide us humans with oxygen as they live off of the carbon dioxide we produce. Some plants are also main vegetables that we eat, so put simply, a world without producers would be practically oxygen-less and vegetable-less.
<span>The most common type of material from a lunar explosion would be achondrite rocks. The moon's composition is low in chondrules therefore it contains more achondrite-like material.</span>