Plsss help. use method of displacement to work out the volume of tje toy dinosaur in the diagram

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

Which common material is an example of a polymer? (25 pts) a. steel b. plastic c. petroleum d. rubbing alcohol

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?