Ecosystems change when
a.
living components of an ecosystem change
b.
nonliving components of an ecosystem change
c.
their stability is disrupted
d.
all of the above

Based on the data in your tables, did the light-colored moths have a higher or lower survival rate after the industrial revolution?

What molecule contains an organisms genetic material, passed down from parents to their offspring

If there are 350 trout found in 200 square feet of a pond measuring 1000 square feet what is the estimated trout population of the pond? a. 1350 b. 1550 c. 1750 d. 2000