Question

If the algae in an algal bloom never run out of nutrients, what other factor do you think might limit their population growth?

A. Sunlight availability
B. Temperature fluctuations
C. Predation by zooplankton
D. Oxygen levels in the water

Answer 1

The population growth of algae in an algal bloom can be limited by factors such as sunlight availability, predation by zooplankton, and oxygen levels in the water.

Step-by-step explanation:

The population growth of algae in an algal bloom can be limited by factors other than nutrient availability. One such factor is sunlight availability. Algal blooms can become so extensive that they reduce light penetration in water, which affects the growth and survival of photosynthetic organisms. Another limiting factor is predation by zooplankton. Zooplankton are small aquatic organisms that feed on algae, and their presence can control the population growth of algae. Finally, oxygen levels in the water can also limit the growth of algae. When the algae die and decompose, severe oxygen depletion can occur, leading to the death of organisms that require oxygen.

Answer 2

Factors that can limit the population growth of algae in an algal bloom include sunlight availability, predation by zooplankton, and oxygen levels in the water.

Step-by-step explanation:

The population growth of algae in an algal bloom can be limited by various factors, even if there are abundant nutrients available. One such factor is sunlight availability. Algal blooms can become so extensive that they reduce light penetration in water, which can hinder the growth of photosynthetic plants and algae. Another limiting factor could be predation by zooplankton. Zooplankton feed on algae, and their population can control the growth of algae in an algal bloom. Additionally, oxygen levels in the water can also limit the population growth of algae. When the algae die and decompose, they consume oxygen, leading to severe oxygen depletion, which can negatively affect the growth and survival of algae.