Two species of sea urchins adapted to live side by side on the sandy bottom of the sea floor. The two species appear to have the same diet-drift seaweeds and other
bits of organic matter. They are able to adapt and to live in the same environment
without competing with each other. How are they able to share habitat and food
resources?

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

3test questions with answers on incomplete dominance

Which of these outcomes is a negative impact of postindustrial societies on the environment? a. nomadic ways b. overpopulation c. overgrazing d. resource renewal