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

How many chromosomes are in a gold fish?

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

Plz ! cattle ranchers and dairy farmers rarely allow all of their animals to reproduce instead they practice selective breeding and only encourage the reproduction of animals with specific features. which of the following cows would a dairy farm most likely choose to reproduce? a. a cow that makes a lot of milk. b. a cow that can run quickly. c. a cow with a think, soft fur. d. a cow with large, strong hooves.