Which living thing is a typical marsh inhabited

Frogs are a good example of a species that thrives in marshes.

They have several adaptations for the aquatic life that enables them to survive in wet environments.

All frogs have long back feet with extensive webbing between their toes. This lets frogs swim very well by increasing their surface area and thus allowing them to push water behind them. This is what propels the frog forward.

Frogs do not swallow water. Instead, they absorb it through their skin. A large network of blood vessels is also found here. This allows frogs to breathe through the skin too. This is very useful and it allows frogs to stay underwater for long periods of time.

Frogs' eyes are also a very useful adaptation. Placed on top of their head, they enable the frog to see any potential predator while having the rest of their body below the water's surface. Furthermore, the eyes are large and rounded allowing them to look in all directions at once as well as seeing very well in dim conditions.

your answer is "the 1950's"

osteogenesis imperfecta (oi) refers to a congenital ailment of bones. in the condition, the bones become brittle or fragile. this ailment is a general result of the defect or mutations in the genes (colia1 or colia2). this mutation results in imperfect collagen formation either in quantity or quality wise.  

there are eight kinds of oi defects, and each kind varies with certain distinctions in symptoms. the usual symptoms include frequent bone fractures, loss of hearing in infants, protruding eyes, discoloration of the white in the eyes, respiratory issues, loosening of the joints, short stature, and other symptoms.