qT=2&tQ=Bat populations around the world are declining.&tC=True|False&cC=1&fB=Excessive use of pesticides in agriculture is a grave source of danger for bat populations. The bats eat insects contaminated with pesticides, and die from the poison.<br><br>In addition, roosting sites and feeding grounds are being transformed to make way for buildings and roads. As scientists discover more and more about these essential pest controllers, countries around the world are passing laws to protect bats and their habitats.