Is a very large group of stars held together by gravity. It may contain as
few as a 100.000 stars, or as many as several trillion stars.

Here’s one way to follow the scientific method. place the missing steps in the correct position in the process

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?

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?