It would be the Guard cell.
Cystic fibrosis is a condition which mainly affects the lungs and pancreas but can affect other parts of the body, including the liver, nose and sinuses and sweat glands. Normally, cells in these parts of the body make mucus and other watery juices and secretions
Explanation: Early signs of CF include: Salty sweat; many parents notice a salty taste when kissing their child. Poor growth and weight gain (failure to thrive) Constant coughing and wheezing.
Answer:
Fossils provide direct evidence of evolution. They show the changes of animals from ancient organisms to present form. Fossils are the preserved remains of earth layers. There are 4 types of fossils-
Original fossils that are not very old. e.g. teeth, skeleton, shells.
Frozen fossils
less permanent fossils
casts, molds, and prints - wings, skin, leaves, etc.
The fossils show the adaptive radiation in horses, humans. The transition fossils form the connecting link between different groups such as fish and amphibians, reptiles and birds, etc.
e.g. Archeopteryx is the connecting link between the reptiles and birds.
The modern horse Equus have several ancestor species, we came to know from the fossil records.
The fossil record shows the evolution of humans and their ancestors.
