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answer:Wolves were reintroduced to Yellowstone National Park in 1995. This keystone species restored the park’s ecosystem. What is the ecological value of a keystone species?

A.They influence the survival of many other species in an ecosystem.

B.They prevent the ecosystem from changing and growing.

C.They protect land and water resources within the ecosystem.

D.They decrease the number of unwanted species in an ecosystem.

Explanation:

the answer is: reproductively

i think i spelled it wrong lol

anyways hope i

-lavira: )

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.