Legumes, for example, will add nitrogen to the soil, naturally fertilizing the area. Marigolds produce chemicals that repel certain insect pests. Here is a brief list of plants along with their companion plants. In some cases plants will be listed that may have a negative impact: 1. Bush Beans -- Beets, Cabbage, Carrots, Celery, Corn, Cucumbers, Eggplant, Lettuce, Pea, Radish, Strawberry, Savory, Marigold. 2.
Sand dunes cannot be formed without sand and wind. Most sand dunes form in deserts and sandy beaches. Enormous sand dunes in the Sahara Desert are called sand seas. Understanding the types of sand dunes and their formation assists in the development of infrastructures like gas and oil fields. It also helps in controlling the movement of sand. Subsequently, the five major types of sand dunes are Star, linear, parabolic, barchan, and reversing sand dunes. The velocity, turbulence, and direction of wind determine the types of sand dunes formed. Also, the amount of sand available also influences the kind of sand dune formed. For instance, star dunes form whenever there are large amounts of sand. 5. Star
The Sahara can be divided into several regions including: the western Sahara, the central Ahaggar Mountains, the Tibesti Mountains, the AÃ¯r Mountains, the TÃ©nÃ©rÃ© desert, and the Libyan Desert. The name 'Sahara' is derived from á¹£aá¸¥ÄrÄ (âØµØ­Ø§Ø±Ùâ, pronounced /ËsË¤aÄ§aËraË/), the plural of the Arabic word for desert.