Worms that had been invaded by bacteria were eaten by birds. Many of these birds died. The most likely explanation for this is that the:
a. Bacteria interfered with
normal life of the birds
b. Disease that killed the birds
was inherited
c. Gene alterations in the
bacterial cells killed the birds
d. Birds produced antibodies in response to the bacteria

Which layer will become saturated first when rain falls?

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.

Drag each tile to the correct box. arrange the phases of mitosis in the correct order. 1 (condensation of chromosomes) 2 (separation of chromosomes) 3 (formation of spindle fibers) 4 (alignment of chromosomes in the center of the cell) 5 (pinching of the cell membrane)