Introduction to the Physical Sciences: Mastery Test Submit Test
Select the correct answer from each drop-down menu.
Scientific theories are always
. A theory may be changed as a result of

Ants live on acacia trees in south america. the ants feed on sugars secreted by the trees. the trees provide room for the ants to live. the ants sting any other insect or animal that comes to eat the trees. what type of relationship is this?