A company has many genetically engineered poplar trees around its factories. Which best describes the poplar trees? They are being used for phytoremediation.
They have transferred their genes to a nontarget species.
They have reduced the effectiveness of pesticides.
They are being used for disease resistance.

The pharynx is the structure in the body that serves as a pathway of both air and food. how does the body make sure that food does not get into the lungs? the salivary glands secrete enzymes that pull food out of the air pathway. the small intestine pushes the air out of the digestive system. the pancreas breaks down food in the air pathway. the epiglottis closes the air pathway so that food will not enter it.

Do you think the gene eef1 alpha1 supports cell theory? explain your response.

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.