The correct answer is option A, It grows healthy crops.
Because the loess soil is very fertile due to its ability to exchange cations and porosity.
Due to cation exchange capacity the plants easily absorbs nutrients from the soil and due to porosity the soil holds the water, oxygen and nutrients which is absorbed by the roots of the plants for their nourishment.
Answer:
The Puffins would have to find more food sources and the beaks would change accordingly to the food source they are going after.
D. Because of the columbian exchange, more food was produced and different variety of food and nutrients were introduced into the world's diet
Sounds of silence hope this helps