Which statement about the photic zone is true?
A)Light intensity increases with depth.
B)Organisms depend directly on organic substances raining down from the aphotic zone.
C)The photic zone is thicker than the aphotic zone.
D)The photic zone has sufficient sunlight for organisms to photosynthesize.
E)The water is typically green because of the abundance of organic matter
Question 2
Metamorphic rocks ____.
A)always have igneous parent rock
B)always have sedimentary parent rock
C)are the oldest rock on Earth
D)are formed under conditions of high temperatures and pressures
E)can form on Earth's surface under special conditions
The 20 amino acids found in living organisms
The absorption of light energy by pigment molecules in the light-harvesting complex, and the path th
Organisms exhibit a diversity of behaviours, which include (clockwise from upper left), foraging and
Diverse living organisms share common chemical features
Light palpation with the hands
Development of the light microscope