A euglena is a microorganism that can either make its own food using energy from the Sun, or it can feed on other organisms to get the nutrients and energy that it needs.
Which of the following statements is demonstrated by the euglena?

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

the elements of art are the visual tools that the artist uses to create a composition. these are line, shape, color, value, form, texture, and space.

the principles of art and design are balance, contrast, emphasis, movement, pattern, rhythm, and unity/variety.