Directions: Read the passage given below and select the inference(s) that hold true based on the facts in the passage.

Passage:

Water quality is of the utmost importance as water is essential to human survival. Despite the advances of the 20th century, 25% of the world’s population still lacks access to clean, uncontaminated water. Even though most of the world has access to clean water, there are still many sources of contamination, such as Harmful Algal Blooms (HAB). It represents a substantial threat to water safety which, in some cases, necessitated the drainage of the entire tanks or lagoon. There are about 300 algal species that bloom, 25% of which are toxic. An example of a harmful algal bloom is Cyanobacteria (Blue-Green Algae).

Inferences:

I: Algae deteriorates the water quality.

II: Algae is a type of water contaminators.

III: Algae reproduce at a very fast rate.