1: It causes cells to change and specialize.
2: zygote -> stem cells -> cell differentiation.
3: meristim cells divide and some of the new cells differentiate into xylem and phloem.
4: Cell differentiation.
5: Other cells would differentiate.
Sugar molecules, cells use carbon dioxide and energy from the sun to make sugar molecules. They are moved into the sieve elements (phloem cells) through active transport. Water follows the sugar molecules into the sieve elements through osmosis (since water passively diffuses into regions of higher solute concentration).
This exchange process takes place in the aveolus (air sac) inside your lungs by diffusion.
it's from a different concentration gradient
the deoxygenated blood with carbon dioxide diffuse into a aveoli (which is in high concentration) and the aveoli release the oxygen into the blood stream (which is low concentration) therefore the blood will be oxygenated again
Answer:
The center of the Milky Way most likely contains a supermassive black hole.
Explanation:
Because it is an eliptical galaxy, it has a little rotation to it but not enough to flatten out, thus the center would contain a supermassive black hole.
Bioticas
Bioticas son seres vivientes que necesitan oxygeno o dioxido de carbono por whemplos seres humanos, plantas o bacterias.
Abioticas son seres que no son viviento que no necesita oxigeno como agua, el viento y precipitación
