Giải phương trình PO3+H2O ?

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?

What element has similar physical and chemical properties as boron.

The ammonia molecule in the diagram has the observed bond orientation because