3. Un grupo de microorganismos se reproduce a una tasa proporcional a su tamaño en el tiempo \( t \). La ceuación que inodela sı crecimiento es: \[ \frac{d P}{d t}=0.2 P \] a) Encuentra la función \( P(t) \) que describe la población, suponiendo que al tiempo \( t=0 . P_{0}=50 \). b) ¿Cuál será la población después de 6 horas?

9. In a study of the habitat of a population of raccoons, scientists found that the number of raccoons increased where people built houses. What might the scientists conclude from this observation?

The most effective regulator of blood pH is which of the following? the renal system the respiratory system the digestive system the buffer system

6. A forest is being cleared for a new housing development. What would be an expected outcome of this environmental change?

Quel mécanisme permet à un jeune pied de ronce de former rapidement un roncier (buisson de ronces)? Indiaue comment la ronce conguiert un autre milieu, même éloigné? Comment s'effectue

The most effective regulator of blood pH is which of the following? the renal system the respiratory system the digestive system the buffer system