Essential oils are natural, chemical-free alternatives to store-bought bug sprays. Many essential oils are mosquito repellents. Lemongrass and Citronella are the most commonly used in natural bug sprays, but most lemon-scented essential oils are insecticides. Other good options include Eucalyptus and Lavender.
Plankton are also divided into 3 main types: 1  Phytoplankton (from Greek phyton or plant), algae that live near the water surface where there is sufficient light to support photosynthesis. 2  Zooplankton (from Greek zoon or animal), small protozoa, crustaceans, jellyfish and various other animals that feed on other plankton.n Plankton, Sea Life. plankton facts-facts about plankton-what is plankton-. Plankton is not the name of a plant or animal but more of a category for any drifting organism that inhabits the middle to upper levels of the ocean, namely the pelagic zone.
There are 5 classes: Branchiopoda (fairy shrimp, water fleas) Cephalocarida (small crustaceans) Malacostraca (isopods, amphipods, krill, crabs, shrimp, lobsters) Maxillopoda (copepods, barnacles) Remipedia (small, recently discovered crustaceans) Subphylum Uniramia This is the largest of the subphyla.rabs and Amphipods. Phylum Arthropoda This is the largest and most successful of the animal phyla, with over 1 000 000 species identified to date and an estimated 1 000 000 000 000 000 000 (1 quintillion) individuals alive today.