Pick a letter and choose two alleles using that letter

For example TT and Tt or tt any of these answers would work.

Explanation:

well, TT, tt and Tt are all types of alleles. I chose to use T and t but you can use any letter you want.

Also, TT is using dominant alleles and tt is using recessive alleles.

surface mining destroys mountain tops, landscapes, forests and wildlife habitats. on top of that, it leads to soil erosion and destruction of agricultural land. the landscape changes can also disrupt river channels and streams, which leads to flooding. which, can destroy plant life and other animals as well.

explanation: