Ventajas y desventajas de ser mujer
ventajas y desventajas de ser hombre

What type of organism is a one-celled organism that functions as a single unit? a. bi-celled b. single-celled c. pre-celled d. multi-celled

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?

Which substance contains thylakoids? a) nadph b)atp c)stroma d)chloroplast