What is an Algal bloom

An algal bloom or algae bloom is a rapid increase or accumulation in the population of algae in freshwater or marine water systems, and is often recognized by the discoloration in the water from their pigments

Explanation:

An Algae bloom is just a excess of nutrients in water to cause a ton of algae.

Explanation:

Algae feed on nitrogen, phosphates and nutrients, so a lot of those will cause blooms. Algae blooms cause a shortage of nutrients for other sea life and that is why they are bad for the environment. Here's a helpful link if you need it https://sciencing.com/algae-blooms-8266246.html

answer; in the united states the plains include the great plains of the west and the tail grass prairie to the south of the great lakes extending east to the appalachian plateau

the answer is:

c. islam and christianity

explanation:

islam and christianity are widely practiced in africa. islam is practiced due to its spread from the middle east into africa, and christianity is practiced due to the colonization of africa by the british empire.