Yes,oxygen-rich blood is carried through pulmonary arteries from the lungs to the heart.
Answer:
The characteristic features of the phylum Chordata are a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a tailgut.
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The most likely reason is because of the decrease of population of prey in the south
There is absorption of carbon dioxide
by the oceans through physicochemical (air-sea surface exchange) and biological
processes. During physicochemical process, molecules of CO2 get into the ocean
by diffusing into the sea surface waters and dissolving. Various factors such
as wind, sea surface mixing, concentrations of CO2, and the temperature of the
water influences the amount of CO2 that diffuses and dissolves in the ocean
surface water. Also, during biological processes, dead cells, shells and other
parts of dead organisms get decayed and releases carbon dioxide at the bottom
of the water.
Answer;
- REM sleep, Transitional sleep.
The dozing, half-awake state often seen in newborns is called REM sleep, transitional sleep.
-REM sleep is characterized by eye movement, increased respiration rate and increased brain activity. REM sleep is also referred to as paradoxical sleep because, while the brain and other body systems become more active, your muscles become more relaxed, or paralyzed.
-Dreaming occurs in REM sleep because of increased brain activity, but voluntary muscles become paralyzed. Voluntary muscles are those that you need to move by choice, for example, your arms and legs.
