Which is an adaptation that helps birds maintain a stable body temperature? air sacs connected to lungs
large chest muscles
down feathers
nearly hollow bones

Aeukaryotic cell must be from a plant if the cell a) a nucleus b) a nuclear envelope c) cytoplasm d) a cell wall

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

Will someone me with this.. specialized cells which perform a particular function form: tissues organs or organism