This tool seems to be really picky and glitchy. I can pull the organisms into the food web design square but getting them to connect is very hit and miss. I've spent about an hour trying to get the lines right and most of the time the lines just don't appear. Either I'm doing it wrong or it needs work. I'm clicking on the organism, then clicking on the blue box with an arrow. Then I'm clicking on the other organism to make the connection but the line just doesn't appear 95% of the time. Every once in a while one will connect. Getting frustrated.
Food Web tool