Native Habitats: Piles of leaves, under logs, and moist soil in warmer areas

Native Range: Mediterranean Basin

Impact on Environment: Competition for native species, they speed up the breakdown of plants and other material changing the soil, can damage native plants by eating them

Native Habitats: Forests, woodlands, and rocky areas

Native Range: Europe, Western Asia, and North Africa

Impact on Environment: densely covers the trees it grows on blocking the sunlight, can damage the trees they grow on, can keep new seeds from growing

Native Habitats: Deciduous forests, riverbanks, and floodplains

Native Range: Eastern and Central North America

Impact on Environment: Provides food and shelter for wildlife, leaves and nuts add nutrition to the soil, releases a chemical that can keep certain plants around it from growing

Native Habitats: Prairies, open woodlands, and rocky slopes

Native Range: Eastern and Central North America

Impact on Environment: Berries provide food for small animals, deep roots help prevent soil erosion, keeps other plants from growing like the walnut tree

Native Habitats: Meadows, grasslands, forests, gardens, and agricultural fields

Native Range: North America, Europe, Asia, and parts of South America

Impact on Environment: Major pollinator of this area helping plants grow, prey for certain birds, necessary to support the ecosystem they're apart of

Native Habitats: Deciduous forests, orchards, gardens, and open woodlands

Native Range: North America

Impact on Environment: Act as food for several species of birds and insects, feed on invasive plant species, support species that act as natural pest control keeping the environment healthy