Question

In many wetlands, nonnative purple loosestrife has become the dominant plant species, often accounting for 90% of the total plant mass. The populations of cattails, canvasback ducks, and bog turtles have decreased in areas with purple loosestrife. Canvasback ducks and bog turtles are likely impacted by purple loosestrife by OA) loss of food. OB) overexploitation. OC) climate change. OD) pollution OE) loss of diversity.

Answer 1

Purple loosestrife is wet land plant and also found in the margins of open streams. fresh water marshes etc. It is an invasive plant because it reproduces very quickly and replaces the local flora. It is not eaten by bird, fish or mammals. Only beetles are the ones which feed on them. Because of the lack of predators, the species grows very fast and displaces others. Displacing others will make the fauna like the bog turtle and canvan back ducks suffer from lack of food.

Option A is the right one.

Turtle and duck do not get sufficient food to feed on, so their numbers rapidly decline.