Scientists figured out that the outer core must be liquid because S waves do not pass through it, but P waves do. The behavior of P and S waves also indicates that the inner core is solid. The speed of seismic waves also depends on the density of the material through which they are traveling.
Explanation:
Organisms (within populations) exhibit individual variation in appearance and behavior. These variations may involve body size, hair color, facial markings, voice properties, or number of offspring.
I think it is TRUE not sure though sorry
Answer:The adaptive traits may be structural, behavioural or physiological. Structural adaptations are physical features of an organism, such as shape, body covering, armament, and internal organization.
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Answer:
El tipo de célula que se considera mas primitiva o menos evolucionada es la célula procariota. Recordemos que las células procariotas son aquellas células que mantienen su material genético disperso en el interior de su célula.