Which of these is an effect of an algal bloom ? a. bacteria are introduced to break down hydrocarbons in an oil spill . b. materials containing metal are toxic to organisms that live in them . c. the mercury contained in fish builds up in animals that eat the fish . d. an increase growth in microorganisms results in oxygen depletion (apex)

The correct answer is option D

The growth of algal bloom is caused due to excessive runoff rich in the nutrients like nitrogen and phosphorous. This run off comes from the agricultural field.

These nutrients aids in the growth of the algae(microorganisms) in large number. This growth forms a layer on the water body and use the oxygen present in the water and makes the water oxygen deficient.

which are post-impressionist paintings? check all that apply?

explanation:

post-impressionism is a predominantly french art movement that developed roughly between 1886 and 1905, from the last impressionist exhibition to the birth of fauvism. post-impressionism emerged as a reaction against impressionists' concern for the naturalistic depiction of light and color.

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