ground cutaway with earthworms. worms in garden soil.

agriculture air animal background cartoon compost composting created crop cross cut cutaway dirt earth earthworm earthworms ecology farm farming fertilizer field flat garden gardening grass ground growth grub horticulture humus illustration insect isolated land landscape lawn layer manure matter microorganism microorganisms natural nature nutrients organic passage peat plant process profile section soil stock tunnel underground vector vegetable water white worm worms