1 Solar-powered home water heaters cost $1,000-$3,500 (including installation) but have extremely low monthly operating costs and can be used in any climate, according to the US Department of Energy.2  The cost for a solar heating system can vary widely. Prices vary based on building and system configuration, the type of equipment selected and other factors. 2  Generally it costs less to install a system in a new home rather than remodeling an existing one, although it can be practical to install a solar system while replacing the roof.
Spices and herbs at a grocery shop in Goa, India. A spice is a seed, fruit, root, bark, or other plant substance primarily used for flavoring, coloring or preserving food. Spices are distinguished from herbs, which are the leaves, flowers, or stems from plants used for flavoring or as a garnish.
Culinary herbs are distinguished from vegetables in that, like spices, they are used in small amounts and provide flavor rather than substance to food. Herbs can be perennials such as thyme or lavender, biennials such as parsley, or annuals like basil.n medicinal or spiritual use any of the parts of the plant might be considered herbs, including leaves, roots, flowers, seeds, resin, root bark, inner bark (and cambium), berries and sometimes the pericarp or other portions of the plant.