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Unlike some types of heat packs, such as those dependent upon irreversible chemical reactions, a sodium acetate heat pack can be easily reused by immersing the pack in boiling water for a few minutes, until the crystals are completely dissolved, and allowing the pack to slowly cool to room temperature. [15]
Nicotiana (/ ˌ n ɪ k oʊ ʃ i ˈ eɪ n ə, n ɪ ˌ k oʊ-,-k ɒ t i-,-ˈ ɑː n ə,-ˈ æ n ə / [2] [3] [4]) is a genus of herbaceous plants and shrubs in the family Solanaceae, that is indigenous to the Americas, Australia, Southwestern Africa and the South Pacific. Various Nicotiana species, commonly referred to as tobacco plants, are ...
Nicotiana glauca Graham – tree tobacco, Brazilian tree tobacco, shrub tobacco, wild tobacco, tobacco plant, tobacco bush, tobacco tree, mustard tree [2] Nicotiana glutinosa L. [2] Nicotiana goodspeedii H.-M. Wheeler [2] Nicotiana gossei Domin [2] Nicotiana hesperis N. T. Burb. [2] Nicotiana heterantha Kenneally & Symon [2] Nicotiana ingulba J ...
Plants are considered domesticated when their life cycle, behavior, or appearance has been significantly altered as a result of being under artificial selection by humans for multiple generations (see the main article on domestication for more information). Thousands of distinct plant species have been domesticated throughout human history.
N. tabacum is the most commonly grown species in the genus Nicotiana, as the plant's leaves are commercially harvested to be processed into tobacco for human use. The plant is tropical in origin, is commonly grown throughout the world, and is often found in cultivation. It grows to heights between 1 and 2 metres (3.3 and 6.6 ft).
Plant taxonomy is the science that finds, identifies, describes, classifies, and names plants. It is one of the main branches of taxonomy (the science that finds, describes, classifies, and names living things). Plant taxonomy is closely allied to plant systematics, and there is no sharp boundary between
Sphenophyllum was a slender climbing plant with whorls of leaves, which was probably related both to the calamites and the modern horsetails. Cordaites, a tall plant (6 to over 30 meters) with strap-like leaves, was related to the cycads and conifers; the catkin-like inflorescence, which bore yew-like berries, is called Cardiocarpus. These ...
The nitrogen-fixing clade consists of four orders of flowering plants: Cucurbitales, Fabales, Fagales and Rosales. [a] This subgroup of the rosids encompasses 28 families of trees, shrubs, vines and herbaceous perennials and annuals. The roots of many of the species host bacteria that fix nitrogen into compounds the plants can use. [4] [5]