Coal
a)is a renewable energy source
b)is inorganic
c)releases fewer toxins than natural gas
d)produces almost half of our nation's electricity

The asian shore crab (hemigrapsus sanguineus) is an invasive species that has impacted the atlantic coast. predict what characteristic of this invader would most likely disrupt the biodiversity of this area.

Gregor mendel is best known for his work with pea plants and for uncover many of the mysteries of genetics. one of his major findings stated that there were specific, physical units of inheritance that are transmitted during reproduction. what is the the name given to these units of inheritance which can be found on chromosomes? a) centromeres b) cytoplasm c) genes d) nucleotides

To determine if a particular plant is homozygous or heterozygous, you would have to test cross with a