Scientists have tried raising endangered whooping cranes in captivity by using sandhill cranes as foster parents. this strategy is no longer used because

The reason why the strategy is no longer being used is because of the fact that none of the fostered whooping cranes are being formed in a mating pair bond along with another whooping crane. That is why the scientist tried raising endangered whooping cranes by using Sandhill cranes.

changes in factors like average income and preferences can cause an entire demand curve to shift right or left. this causes a higher or lower quantity to be demanded at a given price. demand curves relate the prices and quantities demanded assuming no other factors change. it is important for consumers to know this information, because it is crucial for them to know what they can afford and can't afford. i hope this .

d - failures.

the only attempted british colony in north america before 1600 was roanoke, virginia, which was a total failure. england claimed several areas, including newfoundland, but made no sustainable attempts to colonize them before 1600.