What type of reaction occurs without being started by some outside force a. spontaneous reaction b. physical reaction c. activation energy reaction d. backward reaction

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 layers and faults from oldest to youngest.

Overtime the pond slowly becomes more acidic due to the release of chemicals from a nearby factory. which of the organisms would most likely survive the change to their environment?