Coniferous trees are the dominant plants of the taiga biome. A very few species in four main genera are found: the evergreen spruce, fir and pine, and the deciduous larch. In North America, one or two species of fir and one or two species of spruce are dominant.lthough the taiga is dominated by coniferous forests, some broadleaf trees also occur, notably birch, aspen, willow, and rowan. Many smaller herbaceous plants, such as ferns and occasionally ramps grow closer to the ground.
Top 100 Most Prescribed, Top Selling Drugs. The hypothyroid medication levothyroxine (Synthroid, AbbVie) continues to be the nation's most prescribed drug, and the antipsychotic aripiprazole (Abilify, Otsuka Pharmaceutical) continues to have the highest sales, at nearly $6.9 billion, according to the latest data from research firm IMS Health.
XanaxÂ® is one of the most commonly seen drugs in prescription drug abuse treatment. Xanax is classified as a benzodiazepine. Benzodiazepines are sedatives or tranquilizers that depress the central nervous system.They are usually prescribed to treat anxiety disorders.anaxÂ® is one of the most commonly found cases in prescription drug abuse treatment. For some, it is so easy to obtain. Three out of every four drugs used illegally in the U.S. are prescription drugs. According to the government, abuse of prescription drugs has doubled in the past 10 years.