Which statement about calcium and phosphorus is correct?

• A. They are not needed for bones
• B. They are essential for bone development
• C. They are only needed for juvenile bones
• D. They are toxic to wildlife

Answer: (B)

Calcium and phosphorus are essential minerals for bone formation and maintenance. Bones get their strength from hydroxyapatite, a mineral composed largely of calcium phosphate, so having these nutrients available in the right amounts is necessary for proper mineralization during growth and for preserving bone health later on. If intake is insufficient, animals can develop weak bones, deformities, or fractures, especially during growth or after injury. That’s why the correct statement is that they are essential for bone development. They are not unnecessary for bones, not only needed in juveniles, and not inherently toxic at normal dietary levels; toxicity would only arise from excessive amounts, not from normal balanced intakes. In wildlife rehab, ensuring a proper calcium-to-phosphorus balance supports bone development, healing, and long-term bone integrity.