Four of the Most Important Elements on This Planet Are

question 37

Short Answer

Four of the most important elements on this planet are hydrogen, oxygen, carbon, and nitrogen. Give the symbol for each of these elements.
a. hydrogen ______________
b. oxygen ______________
c. carbon ______________
d. nitrogen ______________

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Definitions:

Arthropods

Invertebrates with exoskeletons, segmented bodies, and jointed limbs, including insects, arachnids, and crustaceans.

Larval

Relating to the early, immature stages of an organism's life cycle that significantly differ in form and function from the adult stage.

Sensory Structures

Components of an organism that are specialized to detect changes in the environment or within the organism itself.