Decoration for christmas or a winter season
c. dry part of the time and underwater part of the time. In estuaries, normal organisms may not thrive because of the harsh environment conditions. Salinity or salt content changes invariably, temperature also varies, as well as temperature, and tidal currents change direction every 6 hours.
Speciation occurs when a single species becomes two or more separate species, which can no longer interbreed with one another. Reproductive isolation is required for speciation. Reproductive isolation means the groups in question cannot mate with one another, often because of physical barriers.
lowering the activation energy of the reaction.
