old science reviewer

• sandy soil - Mostly made up of sand. It is the driest and coarsest soil. Because of the fine grains, water drains well and stays dry. Any plants growing in this soil needs to be watered well.
• loam soil - A mixture of sand, silt, and clay. This holds on to most of its nutrients. Keeps enough water to help plants get what they need. It drains well to avoid waterlogging. Loam soil is the best soil for growing crops.
• clay soil - Clay-based soils are known for being cloddy due to their ability to hold onto water. They can become waterlogged and muddy easily, which can be difficult for gardening. Clay soils also hold on well to nutrients, so fewer artificial fertilizers are needed to support crop growth. It is also used for pottery
• silt soil - The most fertile soil. Roses grow well in this type of soil. medium-sized particles, silt soils hold onto water for good plant growth while draining enough to avoid waterlogging. The particles allow this soil to compress easily, making it difficult to dig, plant, and weed.
• chalk soil - Extremely alkaline in nature. Contains a lot of calcium carbonate (chalk). It can be challenging to grow some plants in chalk soil. Water drains quickly through chalk soil, so plants cant get enough moisture
• peat soil - High in organic matter. When moss, shrubs, and grasses die, they form peat. Peat is generally formed near bogs and marshlands. Plants in these areas do not fully decay, leaving the matter thats left extremely high in nutrients. Gardeners often choose to buy peat to improve its fertility.
• troposphere - lowest level of the atmosphere, contains most of our air and all weather
• stratosphere - above the troposphere, the atmospheric layer that absorbs UV rays
• mesosphere - the coldest layer of the atmosphere
• thermosphere - the second-highest layer of the atmosphere
• exosphere - the highest level of atmosphere before outer space
• acid rain - pollutants air = acidic atmosphere. when it rains/snows/fogs it comes as soil pollution\
• uses of water, seawater - habitat of marine aquatic plants and animals
• uses of water, freshwater - serves as drinking water. used for cleaning, washing, bathing, preparing food. sustains plant and animal life, source of seafood. considered for recreational use. routes of transportation
• uses of water, groundwater - serves as drinking water
• water conservation - check the waterline and faucet for leaks, use a glass when brushing ur teeth and a dipper when showering,
• water conservation - use a spray or dipper when watering plants, practice efficient and effective washing of clothes once or twice weekly, use a basin when washing dishes, report any leaks or damaged pipelines in your area