Answer:
Saturday is the planet with the most compelx ring system
Green plants remove carbon dioxide from the atmosphere by photosynthesis.
Answer:
Una célula consta de tres partes: la membrana celular, el núcleo y, entre las dos, el citoplasma.
Explanation:
Usado traducir, no hablo ni escribo bien el español, pero puedo leer.
In humans, the yolk sac is the
site of origin for blood cells and primordial germ cells. The human yolk sac is
a membrane located outside the embryo and it is connected by a tube through the
umbilical opening to the embryo's midgut. The yolk sac serves as an early site
for the formation of blood and in time, is incorporated into the primitive gut
of the embryo.
