Nuclear radiation can be used to look for flaws in metal parts of bridges. The process is similar to using Xrays to look at human bones. What type of radioactive decay would work best for this test? Explain your answer.

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?