A: Effexor (venlafaxine) is an antidepressant in the class of drugs called selective norepinephrine reuptake inhibitors (SNRIs). SNRIs affect chemicals in the brain that may become unbalanced and cause depression. It is used to treat major depressive disorder, anxiety, and panic disorder.: Weight gain is a possible side effect of Effexor, occurring in at least 1 percent of patients taking the medication. Weight gain is a common side effect of tamoxifen, occurring in up to 9 percent of patients taking the medication.
Common Freshwater Organisms. Mosquito fish. Fish Up to 2 1/2. They live in ditches, ponds, and lakes eating mosquito larvae and other insects. Mosquito fish give birth to live young. Tadpole. Amphibian. 1/8 to 3. Tadpoles are young frogs and toads.
Unicellular organisms are known as single-celled organisms. They are made up of a single cell. Organisms like the amoeba, Paramecium are single-celled organisms, they are the oldest forms of life, they existed about 3.8 million years ago. Bacteria, archaea, protozoa, unicellular algae and unicellular fungi are the main groups of unicellular organisms. The single-cell regulates all the activity of the organism. Unicellular organisms are small are mostly invisible to the naked eye. There are two general categories of unicellular organisms: prokaryotic and eukaryotic organisms. Prokaryotic unicellular organisms are protists and some fungi. Some of these unicellular prokaryotes live in colonies. They live together and all the cells of the colony is the same. All the process of life is carried out in each cell in order for the cell to survive. Simplest multicellular organisms are made of cells that dependent on each other for their survival. Most of the multicellular organism are microscopic and are known as microscopic organisms. Unicellular organisms vary in size.