In the human foot, there are 26 bones.
Smoking causes many adverse health effects, including heart disease. Cardiovascular exercise and smoking are two activities which fall at opposite ends of the health spectrum. Cardiovascular fitness, or cardio, helps to improve heart and lung function, builds athletic endurance, and promotes overall health.
Answer:
The exact physical causes of colour blindness are still being researched but it is believed that colour blindness is usually caused by faulty cones but sometimes by a fault in the pathway from the cone to the brain.
