Intro to Biology

“Keystone Species, Shrinking Red Knots, and Biomes”
For your primary post, please respond to one of the following three topics with a post of at least 125 words that addresses each point given in the instructions. Also, please reply to at least one fellow student on any topic.
Topic 1 :  Keystone Species. Watch the video entitled “Some animals are more equal than others…” (1)* Then completely describe the concept of a keystone species, giving specific examples from the video. 
Topic 2 [articles]: Shrinking Red Knots. Read two of the following three articles about shrinking Red Knots (2)*, (3)*, (4)*, or research additional information on your own. Then, address the following issues: