Read the two passages from "Protecting the Great Barrier Reef." Passage 1

The authorities that manage the Great Barrier Reef consider climate change to be the greatest threat to the reef. Warming ocean temperatures are causing a phenomenon called coral bleaching. Coral has a substance called algae living in it. The algae provides the coral with up to 90 percent of the energy it needs. When the water is too warm, coral will release the algae living in its tissue. This causes the coral to turn completely white. One coral releases its algae, it begins to starve. Coral can sometimes survive bleaching, but it is under considerably more stress afterward. Unfortunately, coral bleaching due to climate change is not the only challenge faced by the reef.

Passage 2

The good news is that steps are being taken to manage this problem. Responsible farming practices helps minimize harm to the Great Barrier Reef. It is important that fertilizers and pesticides are used properly. Equally important is using less of them and only when necessary. It is also important for farmers to learn how to properly manage and avoid soil erosion. The Queensland Farmers' Federation is an organization of 2,600 farmers who have land along the Great Barrier Reef. They have joined together to work towards better land management practices. This sort of action is vital to the ongoing protection of the Great Barrier Reef.

What would make the structure of Passage 1 more similar to the structure of Passage 2?

1 The author could focus Passage 1 more on the causes of coral bleaching and how it affects the coral.

2 The author could focus Passage 1 more on comparing and contrasting healthy and unhealthy coral.

3 The author could include possible solutions to the problem in Passage 1.

4 The author could include more dates to show the order of events in Passage 1.