I. Designed by Nature

A. Biomimicry in architecture

1. The spiral is a beautiful, universal shape: a curve that winds outward from a fixed point.

i. In nature, a spiral design is prominent in animals with shells.

ii. In architecture, the staircase mirrors the intricate pattern of a nautilus shell.

iii. Modern parking garages and buildings use the natural beauty of the coiling spiral in their construction.

iv. The design offers a space-saving feature as well—circular stairs and ramps take up less space than traditional horizontal structures.

What features show this is an example of scientific writing?

It tells about what happened long ago.

It uses quotes from historians.

It is entertaining and provocative.

It includes concrete evidence and examples.

- It includes concrete evidence and examples: The passage discusses the use of spiral designs in both nature and architecture, providing specific examples such as animals with shells and modern parking garages.

- It tells about what happened long ago: The passage discusses the presence of spiral designs in nature, which implies a historical perspective on the topic.

The other options don't fit the characteristics of scientific writing. There are no quotes from historians, and the passage's focus on spiral designs in nature and architecture suggests a more factual and informative tone rather than being entertaining or provocative.