The blood consists of a suspension of special cells in a liquid called plasma. In an adult man, the blood is about 1/12th of the body weight and this corresponds to 5-6 litres. Blood consists of 55 % plasma, and 45 % by cells called formed elements. The blood performs a lot of important functions.
The weather and its seasons. Grenada boasts comfortable to hot weather year round. Expect temperatures that range from 32 C during the day in summer to as low as 20 C overnight in winter.
As you might expect, the weather on Colombiaâs Caribbean coast is much hotter and more humid. The average temperature in places such as Cartagena, Baranquilla and Santa Marta is between 24 and 33 degrees. There is significantly less rain than in the capital, but September and October are traditionally the wet seasons.