#1-gastropod,#2-adhesion,#3-autotroph,#4-fungi

This is a gastropod (Big Idea 1 #21). Specifically, it is a snail.  A gastropod is in the phylum mollusca and is normally made up of a one part coiled shell and a flat muscular foot and a head with two elevated eyes. This gastropod was inside its shell so we are unable to see its foot and eyes; however, It does have a one part coiled shell that is visible. They mainly live in marine and freshwater areas, but some are able to live in the desert.

This picture shows the concept of adhesion of water (Big Idea 2 #1).  Adhesion is when one substance latches to another. In this case water is clinging to the leaf. In plants, adhesion of water helps to counter act the effects of gravity as well as help moving water against gravity in plants by having water cling to the water conducting cells in plants. Adhesion is helping to keep this water drop from falling off the leaf. The properties of adhesion help to allow trees to be very tall and still receive water.

This is an autotroph(Big Idea 2 #4). Specifically, this is a picture of moss. An autotroph is an organism that obtains its food molecules without eating other organisms or products derived from other organisms. In the food chain, they are considered producers and provide energy for all other organisms. All their energy is derived from the sun's energy and is that energy is used in photosynthesis to create sugars which are food molecules. Without autotrophs, the heterotrophs of the world would not be able to live.

This picture shows a fungi (Big Idea 1 #20); It is a decomposer. The mushroom will absorb the nutrients of any organic material it decomposes. It is important for nutrient cycling and exchange. Unlike plants fungus' cell walls have chitin. It is a eukaryotic organism. While some are safe to eat, other wild mushrooms can be poisonous. They are not noticeable most of the time except when fruiting as mushrooms or molds.