The law of independent assortment states that traits are passed from parents to offspring independently of one another; therefore the traits are independently assorted.
Explanation:
The law of independent assortment is also known as Mendel's 2nd law of heredity.
It states that during gamete formation, the way one pair of alleles for a given trait distributes itself in the gametes does not affect the way other pairs of alleles (for other traits) distribute themselves.
Transboundary environmental threats like pollution is a problem for both parties i. e. one that is producing pollution and the other which is not producing it, because pollution can't remain at one place and spread from one part to another part of the earth due to open environment. So due to its spreading, it affected both the producing and non-producing parties.