Wetlands arelikegiant sponges.
Duringheavyrains,theycollectandholdwater.Theystopfloodingfrom happening.
Wetlandscleanandfilter water.
Ifchemicalsfromfertilizerswashintowetlands,theplantssoakthemup.Otherthingsthatpollutethewatersinktothebottom.Theyget buried.
Wetlands arehomesforplantsand animals.
Manykindsofplantsandanimalslivein wetlands.
Wetlandsareimportantto people.
Manypeoplelivenearwetlands.Theyusethemtogrowcrops,likerice.Theyalsousewetlandsforfishing,boating,andhaving fun.
BUILDING
![](/nationalgeographic/pioneer_may_2020/what_you_need_to_know_and_wetlands_face_many_threats/1131112/GettyImages_200176237_001.480_0_1.jpg)
Peoplechangewetlands.Theydrainthemtobuildhousesand roads.
UNWANTEDLIVING THINGS
![](/nationalgeographic/pioneer_may_2020/what_you_need_to_know_and_wetlands_face_many_threats/1131113/GettyImages_623543908.480_0_1.jpg)
Plantsandanimalsfromotherareasthatarenotwetlandscancauseproblems.Theycancrowdoutwetlandplantsand animals.
FARMING
![](/nationalgeographic/pioneer_may_2020/what_you_need_to_know_and_wetlands_face_many_threats/1131115/GettyImages_1171294580.480_0_1.jpg)
Wetlandsareoftenmadeintolandfor farming.
Climate Change
![](/nationalgeographic/pioneer_may_2020/what_you_need_to_know_and_wetlands_face_many_threats/1131114/GettyImages_1164447886.480_0_1.jpg)
Climatechangeraisessealevels.Wetlands flood.