A student is studying living things on the ocean floor, starting with organisms in the deepest areas of the ocean and moving toward the shore. Which of the following lists the areas the student will study in the correct order? Select the correct answer.

A.
hadal zone, bathyal zone, sublittoral zone, abyssal zone, and intertidal zone
B.
sublittoral zone, intertidal zone, bathyal zone, abyssal zone, hadal zone
C.
hadal zone, abyssal zone, bathyal zone, sublittoral zone, intertidal zone
D.
intertidal zone, bathyal zone, sublittoral zone, hadal zone, abyssal zone

Which best explains why there are 64 possible codons in the genetic code and only 20 amino acids that make protiens of living organisms on earth

The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.

Female luna moths (actias luna) attract males by emitting chemical signals that spread through the air. a male hundreds of meters away can detect these molecules and fly toward their source. the sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. what predictions does your hypothesis make? design an experiment to test one of these predictions.