The main idea of the article is that a. damage to the ocean is ...

[jrubin]

The main idea of the article is that
 
  a. damage to the ocean is ignored by mining interests.
  b. human activity only affects terrestrial animals.
  c. ocean damage caused by human activities is threatening many ocean species.
  d. polar bears and penguins have been the most threatened.

Question 2

What are supporting details in a paragraph?
 
  a. Words, names or phrases that tells who or what the author is writing about.
  b. Additional information in the paragraph that helps you understand the main idea completely.
  c. Sentences in a paragraph that contains both the topic and the author's single most important point about this topic.
  d. What you already know about the topic of the paragraph.

[stallen]

Answer to Question 1

c. ocean damage caused by human activities is threatening many ocean species.

Answer to Question 2

b. Additional information in the paragraph that helps you understand the main idea completely.

[jrubin]

Wow, this really help

[parker125]

Excellent