Birds have specialized feathers that are important for flight called
feathers, or flight feathers.

Select the correct answer. in the image, if the washcloth represents consumed food, which organ of the digestive system correctly represents the action performed by the hands? hands squeezing water from a washcloth a. esophagus b. large intestine c. liver d. mouth

Melting glaciers is a serious threat to the environment what is the possible consequence of melting glaciers on polar bears?

Why has two different alleles for the same trait?