In an ecosystem, removing a single species can sometimes hav…

In an ecosystem, removing a single species can sometimes have dramatic effects. Explain the difference between a keystone species and a foundation species, and describe what might happen to a community if one of them is removed. Use a specific example to support your answer. 

What category of heart defect has the following: i. Cause a…

What category of heart defect has the following: i. Cause a decrease in systemic oxygenation  ii. Contain a right-to-left shunt iii. Deoxygenated blood from the systemic veins must pass into the aorta   iv. This may happen at either the atrial or ventricular level, or both v. Right-to-left shunting may also take place in the lungs 

How did learning about sign language and/or gestures enhance…

How did learning about sign language and/or gestures enhance or reshape your understanding of language in general or of a specific course concept, e.g., language ideologies, linguistic standardization, multimodality, multifunctionality, etc.  Limit your response to 2 paragraphs.