Question 1
which of these is an environmental effect of building dams?
increased water temperature upstream
increased fertility downstream
weed growth upstream
sediment builds up downstream
question 2
which of these is an environmental effect of destroying wetlands?
smog
acid rain
loss of habitat
less flooding
question 3
which of these is an effect of overcrowding in an environment?
species create new habitats to survive
predator-prey relationships change
rate of animal reproduction increases
less energy for consumers due to fewer plants
question 4
how can humans increase the rate of endangered or extinct species?
build and populate more zoos
pass more laws about land use
reduce environmental impacts
introduce new predators to an environment
question 5
a dam is built in a remote area to provide electricity to nearby towns. what is an unlikely effect of the dam?
decreased farming downstream from the infertile soil
decreased aquatic life upstream from warmer temperatures
increased weed growth downstream from clear water
overpopulation of species