Onion skin weathering is a geological process that occurs when a rock's outer layer peels off due to extreme variations in temperatures. This type of rock weathering typically occurs in desert areas where rocks are subjected to extreme heat during the day, which causes rocks to expand. When temperatures drop during the night, the rocks contract.Know More
The outer layers of rocks will begin to flake off over a period of time due to these temperature extremes. Another name for this type of weathering is exfoliation weathering. This is one type of erosion that rocks can undergo.
Some other types of rock erosion are biological, chemical or freeze-thaw weathering. The weathering process dissolves or breaks down rocks into smaller pieces.Learn more about Vegetables
The edible part of the onion plant is the bulb. This bulb is underground during growth, while green stalks that emerge from the bulb reach above the ground to gather sunlight and carbon dioxide.Full Answer >
A pregnant onion is a type of onion plant that is easily grown either outside or in indoor pots. Folia specifies that this plant is not edible and may actually be toxic if ingested.Full Answer >
When gold jewelry causes discoloration of skin, it is due to a chemical reaction between the jewelry and oils on the skin. Most gold jewelry is not actually solid gold and can contain different metals, such as copper or nickel, that react with the skin's natural acidity. The reaction causes the other metals to oxidize, and leaves a discoloration of black or green on the skin.Full Answer >
Onion seeds come from the flower of the onion plant. Similar to a tulip, onions sprout flowers from bulbs below ground. The flowers dry and the seeds pull away easily, either by natural forces or during harvesting.Full Answer >