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Circulatory and Nervous System DNA Mutation & Genetic Engineering Muscle Histology Intravenous Fluid Therapy Physical fitness , Wellness and Lifestyle Neuron Structure The Cardiovascular System OCR A-level Vessels Eye and Ear Health and Medicine Biological Molecules Muscular System Skin Appendages Microorganism - Diseases

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Digestion › View

Why is calcium important in the diet?

A. for healthy muscles

B. for strong teeth and bones

C. for strong hair and nails

D. for healthy eyes

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Plant Biotechnology › View

What would be a positive reason to genetically alter Fraser Fir trees in North Carolina to make them more resistant to rot?

A. By producing crops that are frost resistant

B. By making robots to replace large farm machines

C. The population of fir trees would increase and grow healthier.

D. By increasing the use of wind farms that produce electricity

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