Multiple choice questions on biology: pentadactyl limb, carbon cycle, and health centres.

Here are the answers to the multiple-choice questions:

1. The limbs of mammals are built on a basic pentadactyl plan. The tibia and fibula of the hind limb are represented in the fore limb by the: * B. Radius and ulna

2. The diagram shows the Carbon Cycle. What process does letter X represent? * C. Decomposition (While 'coal' combustion also releases CO2, the arrow from 'dead organisms' directly points to X, making decomposition the most fitting general process for the breakdown of organic matter to release CO2, which includes the origin of fossil fuels.)

3. Which of the following activities is not carried out in a health centre? * A.