Biology, 18.07.2019 12:30 tiaharris3191

In ce consta importanta subciclului fiziologic al pasarilor migratoare

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Answer from: preservations

What is the importance of the physiological subcycle of migratory birds ? (The question was in Romanian)

Migratory birds are an important to Arctic communities which harvest them, their eggs.

During summer they make the neighborhood lively and bringing sound back to wherever they are after the cold and silent winter.

A study the physiology of certain migrants has revealed that metabolic patterns usually change before migration, and fats is accumulated in their body tissues.

Their food consumption increase during the autumn molt.

The thyroid gland plays causes some of theses fundamental physiological changes, those correlated with migratory activity. Some of these fluctuations are not recorded in nonmigratory species.

Explanation:

Note: The annual cycle of migration depends on a complex internal rhythm and activities that affects the whole organism, particularly the endocrine glands (glands of internal secretion) and the gonads - hormonal releases.

The migration answers to migratory stimuli and breeding functions.

Answer from: Quest

The answer is b. hope this !

Answer from: Quest

c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust. the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles. three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.

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In ce consta importanta subciclului fiziologic al pasarilor migratoare...

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