The first blank can be filled with chain and the second blank can be filled with web.
The food chain shows the link between the organism, what they eat and are eaten by whom. It is a diagram, which shows the flow of the energy from one organism to another by consumption of the organism. There are many organism, which can eat variety of food and can be eaten by many organism, together they form inter connected food chains, which is known as food web. In other words, food web is interconnected food chains.
Color is the least reliable property for mineral identification. The same mineral can come in a variety of colors and different minerals can be the same color. The color can change over time do to weathering.
