Answer:
When a warmer air mass travels over colder ground, the bottom layer of air cools and, because of its high density, is trapped near the ground. In general, cold air masses tend to flow toward the equator and warm air masses tend to flow toward the poles. This brings heat to cold areas and cools down areas that are warm
The three foremost forms of photosynthesis are C3, C4, and CAM (crassulacean acid metabolism)
C4 flowers are so-called because the primary manufactured from CO2 fixation is a C4 natural acid, oxaloacetate, shaped by way of the carboxylation of phosphoenolpyruvate (PEP) by way of PEP carboxylase. The oxaloacetate is converted to other C4 acids (malate or aspartate) and transferred to the packaging sheath.
Calvin cycle is the main pathway of carbon fixation in vegetation, algae, and cyanobacteria. The opportunity pathways of carbon fixation are the Reductive citric acid cycle in microorganisms. 3-hydroxypropionate cycle in bacteria and archaea.
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Every change in a species is coded within the DNA. But the bird had lost a toe an accident. So the toe-loosing-option isn't true because not every bird looses his toe.
(Example: If a women gets bitten by a snake on the arm and gets the arm removed from her body and then in a year or so has a baby with her new husband. The baby won't be born with one arm because his/her mother lost her arm.) <span />
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Bony fish belong to Class Osteichthyes, while cartilaginous fish belong to Class Chondrichthyes. Bony fish have a bony skeleton, while cartilaginous fish have one composed mostly of cartilage. Bony fish have body coverings of scales, while cartilaginous fish are covered with dendritical projections (think shark skin).
Bony fish are found in fresh and salt water; cartilaginous fish are found only in salt water. Bony fish have gills covered by an operculum; cartilaginous fish have gill slits. Bony have no eyelids; the cartilaginous fish do. Bony fish have an air-filled swim bladder; cartilaginous fish have an oil-filled liver to keep them bouyant. Hope this helps! Whew!
