Your first photo shows Horsenettle (Solanum carolinense).
Here is our page on it: https://extension.umd.edu/hgic/topics/horsenettle
Your second photo looks like wild carrot, a.k.a. Queen Annes Lace (though there are other looks alikes- let us know if you see a flower and it is not the white dome of tiny flowers)
Your last photo is Ragweed, which is the weed which flowers in the fall that bothers people with allergies. Here is our page on it: https://extension.umd.edu/hgic/topics/ragweed