rocks to let off a material that hurts fish. power instead farmers use chemicals to help their plants grow when these chemicals get into water, they hurt fish find ways to help crops grow without using harmful chemicals people keep fish as pets there are less fish in the ocean stop catching fish for pets people collect fish for their body parts fish die pass laws that stop people from selling fish body parts people put their pet goldfish into ponds goldfish eat the other fish who live in the pond stop putting pet fish into ponds people catch too many of the same kind of fish to eat certain types of fish are in danger of extinction pass laws to stop people from overfishing, and encourage people to cook less of certain kinds of fish people destroy coral reefs fish have nowhere to live protect coral reefs farmers take water from lakes and rivers for their animals the level of the water falls and makes it hard for fish to live find ways for farmers to use less water people build roads and cut down trees soil gets into streams and fills up holes between rocks so that fish cannot hide from predators protect the forests people build dams fish can’t get to where they need to go remove dams Human Activity → Problem for the Bats → Solution people kill bats because they think they are dangerous bats are killed teach people that bats are not dangerous
can’t go people cut down dead trees and no longer use wooden fence posts birds have no place to build their nests build nest boxes for birds people build houses and shopping malls there are no open fields for birds to build their nests in people can set aside large grassy areas for birds farmers use poisonous chemicals to protect their crops birds eat the chemicals and cannot lay healthy eggs stop using dangerous chemicals people bring new animals into an environment birds don’t have enough space to live in or enough food stop bringing new animals into an environment and work to keep harmful invading animals out people build tall buildings and use bright lights birds can’t see because of the lights and crash into buildings turn off lights at night people build buildings with windows birds crash into the windows mark windows with images or use a window shade people let their pet cats outside cats attack birds keep pet cats indoors people cut down forests birds have no place to live protect land and trees people put out wildfires without wildfires, there are no open woodlands for the birds to nest or find food in restore woodlands people build homes and grow crops birds have no place to live protect the places where birds live Human Activity → Problem for the Turtles → Solution
people bring new plants into turtle habitats turtles can’t build their nests people work to control the spread of new plants people bring new fish into lakes and ponds new fish eat baby turtles move baby turtles to safe places people fish turtles get trapped in fishing nets use nets with escape hatches for turtles people use plastic shopping bags turtles eat the shopping bags and the shopping bags clog their stomachs stop using plastic shopping bags people eat too many turtles certain kinds of turtles are extinct change the laws so that it is illegal to eat turtles hikers let their dogs off leashes turtles get injured by dogs keep dogs on leashes when hiking people keep turtles as pets turtles can’t live and grow well in captivity stop keeping turtles as pets people race turtles when turtles from different places share germs with each other they can get sick leave turtles alone people drive cars turtles get hit by cars build fences along highways that keep turtles out people build homes and businesses on the places where turtles live turtles have nowhere to live protect places where turtles live people build buildings in the wetlands where turtles live turtles have nowhere to live create new shallow marshes and ponds
Evidence Sort Model Categories and Evidence: Chemicals Human Activity → Problem for the Frog → Solution people spray chemicals to kill insects frogs die too stop using chemicals that harm frogs farmers use chemicals to protect their crops chemicals prevent frogs from growing normally find new ways to protect crops People use CFCs that destroy the earth’s atmosphere too much sunlight hurts frog eggs stop using CFC and find other ways to block the sun’s harmful rays People spread salt on roads to melt ice the salt gets into the water and kills the insects that frogs eat. the salt gets on the frogs skin and dehydrates them so that they die of thirst. find new ways to melt ice Non-native Species Human Activity → Problem for the Frog → Solution people plant new plants frogs can’t find a place to lay their eggs only plant plants that are originally from an environment people introduce new fish into ponds new fish eat the tadpoles take the new fish out of the ponds Hurting the Environment Human Activity → Problem for the Frog → Solution People put garbage in the frogs can’t live in a dirty clean and protect the