Relate the words Extrusive and Intrusive to the words Exterior and interior. Explain how the meanings of these words help you understand each type of igneous rock.

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm

Which of the following is not a technology that can be used to conserve resources? a. hydropower b. volcanic power c. natural gas d. geothermal select the best answer from the choices provided a b c d