O type blood contains both A and B antibodies.
B causes all vegetation to freeze
The correct processes and components of the carbon cycle is given in the image attached .
The water level in the bucket would drop.
This is because the pebbles have a greater density than water - they displace more water (when floating in a cup), than their volume. Thus the water displaced by the cup of floating pebbles has to be more than the volume of pebbles in the cup.