Copper in soil is usually toxic to plants, but some plants that grow near copper mines evolve copper tolerance. when copper-tolerant plants are grown in copper-free soil, they are outcompeted by the non-tolerant genotype. which of the following principles does this scenario exemplify?
a.
the evolution of tolerance to copper resulted in a dependence on copper
b.
evolution always maximizes the improvement or progress of a species
c.
evolutionary changes can be advantageous under some environmental conditions but disadvantageous under others
d.
resistant phenotypes always out-compete non-resistant phenotypes

C. Evolutionary changes can be advantageous under some environmental conditions but disadvantageous under others

Explanation:

Evolution means to change something to survive, but that is under specific context. If we change the context, maybe that evolution is not advantegerous on the new scenario or context.

In this case, the plant evolve to survive copper in soli. If the soil has no more copper, that evolution is no longer needed.

the cell theory states that all living things including animals, as well as plants, are made of cells.

explanation:

the universal gravitation equation. since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. if the mass of one of the objects is doubled, then the force of gravity between them is doubled.