* 4. ¿Qué es el asma bronquial?
a-Es una enfermedad causada por el polen
transportado por el aire.
b-Es una enfermedad auditiva.
c-Es una enfermedad pulmonar crónica.
d-Es una inflamación de la mucosa nasal.​

After fertilization, which type of cellular division is responsible for the growth and development of a complex, multicellular organism?

What materials must dams have to produce electricity, and what must occur?

How do water’s relative densities as a solid and a liquid differ from that of most other substances? water’s solid and liquid forms have different densities, while most other substances have solid and liquid forms with similar densities. water’s solid and liquid forms have similar densities, while most other substances have solid and liquid forms with different densities. water’s liquid form is less dense than its solid form, while the opposite is true of most other substances. water’s solid form is less dense than its liquid form, while the opposite is true of most other substances.