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What are two predicted or realized benefits and two concerns about wolf re-introductions into Yellowstone Park?

In general, habitat reserves should be___________.

cin is used with >> to gather one or more inputs 

___________set of rules that gives meaning to a language 

If will use the Compound statements the Example x = x + 5 should be:

 Data must be loaded into main memory before it can be manipulated

Which substance is responsible for platelet aggregation?  

Which query calculates the overall average food price in the most efficient way?

Retrieve the order ID and total amount spent on only the top 3 most expensive food of all items in the Food table. Hint: The total_amount column in Orders table includes all food in an order not just the most expensive food.

What is the following query returning? WITH a AS (    SELECT food_name, SUM(oi.quantity) as sum_quantity    FROM Orders o        LEFT JOIN Order_Items oi ON oi.order_id = o.order_id        LEFT JOIN Food f ON f.product_id = oi.product_id    GROUP BY 1    QUALIFY Count( DISTINCT o.order_id) OVER (PARTITION BY customer_id)>1)SELECT food_nameFROM aQUALIFY DENSE_RANK() OVER (ORDER BY sum_quantity DESC) < 4