Durable good. A car is a durable good. The gasoline that powers it is a non-durable good, or consumable good. In economics, a durable good or a hard good is a good that does not quickly wear out, or more specifically, one that yields utility over time rather than being completely consumed in one use. Items like bricks could be considered perfectly durable goods because they should theoretically never wear out.
Photosynthetic Protists. These protists belong to a division called Pyrrophyta of algae. They are a well defined group of unicellular, photosynthetic forms. Most of them are flagellated and motile but some forms are non-flagellated.
Protists, like monerans, are microscopic. Some examples are amoeba, paramecium, kelp, and diatom. Protists vary widely in shape, size, and form, and can be unicellular or multicellular. Protists are eukaryotic, meaning they have a nucleus and other structures in their cells, which are not found in prokaryotic cells.