Welcome to the Jungle

These are my plants. The first picture is of some sort of weed apparently. When I added some soil to my plants a couple of months ago they started growing out of nowhere. After some confusion as to whether they are something I planted or random weeds, I decided they are just weeds and replanted them in a separate pot. I am waiting to see what they grow up to be.

The next few pictures show the life of an avocado seed. When I put them in a cup of water, they start to split open. Roots come out of the bottom. As the roots grow, a stem pops up from the top. The young avocado plant with a few leaves grew out of an avocado that I accidentally broke a month or two ago. To my surprise, one half of the avocado still grew roots and a stem, which is what you see. The other half lay dormant for a while, and is now also apparently starting to grow roots (I have yet to see whether it grows a stem). Another avocado I planted actually grew two stems out of the same pit, one short and stocky, the other long and thin.

The plants in soda bottles on the right are tomatoes. I accidentally hit a ball into one of the bottles and it fell four feet and landed upside-down. Most of the tomato plants inside looked pretty bad after that, but are starting to recuperate.
The aluminum pan is full of pepper plants. They were once in a small container, but after they reached a certain size they stopped growing. When I planted them in this larger container they suddenly grew a lot faster.

The other plant you see is a bean plant, which is the offspring of one of the original beans I planted last year. It looks rather small and weak, but hopefully it will get better.

The other tiny plants are strawberries, grown from the seeds that I plucked by hand out of an actual strawberry. The longer plant is about five millimeters, and the shorter one is about three. Last night I watered this container because it looked a little dry, and by this morning two more similar plants appeared, so now there are four. I am afraid they might die for the same reason the watermelons did, because the soil is getting hard.