Question

competing paramecia. scientists are investigating single - celled organisms called paramecia. paramecia are commonly found in aquatic ecosystems. the diagram shows a paramecium. the table lists five environmental changes. in each row, predict if there will be an increase or a decrease in the population size of p. aurelia. beside each environmental change, click increase or decrease. bacteria are removed from broth, habitat size increases, competitor is introduced, bacteria are added to broth

Explanation:

Step1: Understand Paramecia food source

Paramecia eat bacteria. If bacteria are removed from the broth, their food source decreases, so population decreases.

Step2: Analyze habitat - population relation

Larger habitat can support more organisms. So, when habitat size increases, paramecia population increases.

Step3: Consider competition effect

Introduction of a competitor means more competition for resources, leading to a decrease in paramecia population.

Step4: Evaluate bacteria - paramecia relation

Adding bacteria means more food for paramecia, resulting in an increase in population.

Answer:

Bacteria are removed from broth: Decrease
Habitat size increases: Increase
Competitor is introduced: Decrease
Bacteria are added to broth: Increase