step 1 plan your budget one of the first things to think about when planning a wedding is how much you can afford to spend whether your budget is Â£ 1000 or Â£ 100000 you can be sure that there are wedding venues and services out there that will suit your needs and are within budget
(not 100% sure about this). =========================================================. Capillaries, rather, have to be thin otherwise gas exchange (oxygen from the lung's alveoli, and carbon dioxide from the capillaries), could not take place.Also, down-loading of nutrients and other necessary substances, etc., needs thin capillary walls as well.   Capillaries are one cell thin so that the red blood cells can easily exchange oxygen that they picked up in the lungs, with the bodies cells.
  Capillaries are very small in size because they need to have a large surface area so they are able to transport blood all around the body. Blood cells must pass in singl â¦ e file through the capillaries as they are so small.16 people found this useful. Ahmadbtm. Capillaries are very small in size because they need to have a large surface area so they are able to transport blood all around the body. Blood cells must pass in singl â¦ e file through the capillaries as they are so small. 16 people found this useful. Ahmadbtm.