Consuela stands in front of her american history class to give a presentation. she suddenly loses consciousness and suffers a ""sleep attack"" referred to as

The options

A. dyspnea

B. Ataxia

C. cataplexy

D. narcolepsy

Our ANSWER IS D.

D. narcolepsy

Explanation:

It is a chronic sleep disorder which leads to excessive daylight drowsiness.

It may be due to a genetic factor and unusual signal being released in the brain as a result of absence of the brain chemical called hypocretin/orexin, which controls sleep. It is often seen as the effect of the immune system erroneously working against the production of hypocretin in thr brain.

It results in unexpected attacks of sleep, abrupt loss of muscle tone and hallucinations.

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.

ans.

gregor john mendel is known for study of inheritance in pea plants. he used garden pea plant for his study, having alternative traits for various characters. he performed cross-breeding in pea plants to check how characters are transmitted between parents to offspring, such as cross between pure tall and pure dwarf plant. mendel studied the inheritance patterns in pea plants for various generations.

thus, the correct answer includes options and f).