Environments are covered with manmade structures like roads, buildings, and sewers. Green spaces such as parks, backyards, and u
ndeveloped lots are scattered among the developed areas instead of all connected together. Plants and animals have to deal with exposure to toxins from vehicles and loss of habitat and food sources. These are all ways that __________. A) humans have intervened to both manage and manipulate the environment to ensure species survival B) nonhuman life in an urban ecosystem differs from that in an undeveloped forest ecosystem C) cities have been developed to keep wildlife out of public areas D) humans have impacted the environment and caused wildlife species to become domesticated E) nonhuman life adjusts to its new habitat
Explanation: Extraneous Variable. When we conduct experiments there are other variables that can affect our results, if we do not control them. These other variables are called extraneous or confounding variables.
