Bull vs. Bear Markets. The opposite of a bull market is a bear market, which is characterized by falling prices and typically shrouded in pessimism. The use of bull and bear to describe markets comes from the way the animals attack their opponents.
Symbiosis is a close relationship between two or more different species. There are three types of symbiosis we will discover: CommensalismâA relationship where one species obtains food or shelter from the other species. Does not harm or help the other species. MutualismâA relationship where both species benefit from the relationship. Parasitism-- A relationship between two species in which one species (the parasite) nourishes itself to the disadvantage of the other species (the host). Today you will be given a card with a picture and name of a particular species.
Symbiosis, any of several living arrangements between members of two different species, including mutualism, commensalism, and parasitism. Both positive (beneficial) and negative (unfavourable to harmful) associations are therefore included, and the members are called symbionts.