GERD signs and symptoms include: 1  A burning sensation in your chest (heartburn), sometimes spreading to your throat, along with a sour taste in your mouth. 2  Chest pain. 3  Difficulty swallowing (dysphagia). 4  Dry cough. 5  Hoarseness or sore throat. 6  Regurgitation of food or sour liquid (acid reflux). 7  Sensation of a lump in your throat.ERD signs and symptoms include: 1  A burning sensation in your chest (heartburn), sometimes spreading to your throat, along with a sour taste in your mouth. 2  Chest pain. 3  Difficulty swallowing (dysphagia). 4  Dry cough. 5  Hoarseness or sore throat. 6  Regurgitation of food or sour liquid (acid reflux). 7  Sensation of a lump in your throat.
A fossil is the remains or traces of a once-living plant or animal that was preserved in rock or other material before the beginning of recorded history. The term also is used to describe the fossil fuels (oil, coal, petroleum, and natural gas) that have been formed from the remains of ancient plants and animals.
1 Fossils are formed by plants and animals becoming trapped in deposits or sediments and then buried by other layers and compressed as the sedimentary rock forms. 2  This is why the vast majority of fossils are found in sedimentary rock layers. 3  Fossils are the remains of or 'imprints' of dead organisms (plants or animals).(a) A sedimentary rock bed is formed from plant/animal remains or weathered and eroded particles from pre-existing rocks. The material is deposited in layers that will eventually form the sedimentary rock. These may be transported, usually by water (or wind in the case of sand) and deposited to form sediments.