Question

what are the two main abiotic factors that influence seagrass productivity and regulate the abundance and distribution of a given species?
temperature and salinity
temperature and salinity
wave energy and tidal range.
substrate type and ph level.
question 17
1 pts
seagrass meadows exist on almost every continent except for which one?
antarctica
antarctica
europe
africa

Explanation:

First Question (Abiotic Factors for Seagrass)

Abiotic factors are non - living components of an ecosystem. For seagrass, temperature and salinity are key abiotic factors. Temperature affects metabolic processes and growth rates of seagrass. Salinity, as seagrasses are marine or estuarine plants, affects their osmoregulation and physiological functions. Wave energy and tidal range are more about physical disturbance, and substrate type and pH level are not the two main factors regulating productivity and distribution in the same way as temperature and salinity.

Seagrass meadows require relatively moderate temperatures and suitable marine or estuarine environments. Antarctica has extremely cold temperatures, ice cover, and a harsh environment that is not suitable for seagrass growth. Europe and Africa have coastal areas with suitable conditions for seagrass meadows.

Answer:

A. Temperature and salinity (Note: Since two options are "Temperature and salinity", either of the first two options with this text is correct. For example, the first "Temperature and salinity" option can be chosen as the answer.)

Question 17 (Seagrass Meadows Distribution)