Question

A variety of pear tree, known as Bradford, was
originally introduced into the eastern United
States in the 1960s. Today, this tree is crowding
out other plants in these states. This situation
best illustrates
(1) an unintentional negative effect of altering
an ecosystem
(2) how a foreign species is controlled in the
eastern United States
(3) that the introduction of a foreign species
does not affect food webs
(4) that serious environmental consequences
can be avoided by importing a foreign
species

Answer 1

The right answer for the question that is being asked and shown above is that: "(4) that serious environmental consequences can be avoided by importing a foreign species."Today, this tree is crowding out other plants in these states. This situation best illustrates that serious environmental consequences can be avoided by importing a foreign species