Question #1:
where does all the energy for this pyramid come from?
question #2:
which level has the most organisms?
question #3:
which level has the least amount of energy
question #4:
what do the producers do with 90% of the energy from the sun that is not passed on?

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

When the solution concentration on the outside of a cell is greater than thesolution concentrate on the inside of the cell, what type of solution is the cellwithin?

The fluid mosaic model of the membrane proposed that membranes