¿Por qué se afirma que los ecosistemas son dinámicos? A.
Porque están sujetos a cambios causados por la evolución natural y por la intervención del ser humano.
B.
Porque los nichos ecológicos contienen una gran cantidad de microorganismos que producen cambios rápidamente.
C.
Porque permanecen intactos y no son afectados por ningún agente externo.
D.
Porque sin importar la cantidad de seres que albergue, sufre pequeños cambios.

i would say it is

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.  

the answer is: metamorphic rocks often show the presence of fossils, also a

hope i

-lavira: )