which element provides strength to the exoskeletons of clams and oysters?\n○ sulfur\n○ oxygen\n○ hydrogen\n○…

which element provides strength to the exoskeletons of clams and oysters?\n○ sulfur\n○ oxygen\n○ hydrogen\n○ phosphorus
Answer
Brief Explanations:
The exoskeletons of clams and oysters are made of calcium - carbonate. Oxygen is a key element in the carbonate part and is involved in the structure and strength - giving properties of their exoskeletons. Sulfur, hydrogen, and phosphorus are not the main elements providing strength to their exoskeletons.
Answer:
oxygen