Question

causative agent of red tide is​

Answer 1

Answer:

algal bloom

microscopic algae accumulated and increase their number

Answer 2

Red tide or algal bloom is caused by increase in the number of micro organisms like protozoa,algae which are harmful.

Explanation:

• The growth of these algae are depend upon wind direction, temperature,nutrients,and salinity of the water in estuaries as they can't survive in freshwater environment.

• Dinoflagellates and phyoplanktons are found in algal bloom that have photosynthetic pigment which is responsible for the formation of red tide.

• The organisms undergo rapid duplication and thus their population increases in the water.

• Red tide also related with human exploitation and harmful toxins that are secreted by the algae.