Why can the removal of one important species affect an entire ecosystem? a. most ecosystems only have one producer. b. all the organisms in an ecosystem interact with each other. c. most ecosystems have unlimited shelter and food. d. organisms in an ecosystem do not complete for resources. can someone me asap !

Which process is involved in growing crops? irrigation transportation recreation condensation

When in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? view available hint(s)when in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? active transportexocytosis

The same agricultural practices are used in every country of the world. select the best answer from the choices provided t f