If you were an engineer designing a new artificial biosphere,

A-what approach would you use?
B-How could
your design attempt to avoid the problems faced by Biosphere 2?
C- Can you find
any papers published by current projects using this facility to support your
explanation with evidence? ( BONUS )

Most of the volume of an atom is occupied by the

Which of the following is a measure of the amount of light a star directly emits?               a.  luminosity    b.  intensity    c.  wavelength    d.  brightness

Which of the following is part of the explanation or description of electromagnetic waves? (select all that apply) a. electrically charged molecules in a medium transfer their energy to nearby electrically charged molecules. b. a changing electric field causes a changing magnetic field. c. magnetic molecules in a medium transfer their energy to nearby magnetic molecules. d. a changing magnetic field causes a changing electric field.