Summer temperatures are relatively cool and winter temperatures are relatively warm due to the moderating effects of the pacific ocean. precipitation levels are low, with clearly defined winter wet and summer dry seasons. these sentences describe climate.

Mediterranean  
Mediterranean climate is characterized by dry, warm to hot summers and rainy winters. It gets its name from the Mediterranean Sea where this climate is common place, but other regions of the world also get this type of climate such as the United States' California, areas in Western and Central Asia, Western Australia as well as Southern Australia. You'll usually find this type of climate on the western coasts of the continents.

By water evaporation from the leaves is created a negative pressure at the top of the tree that promotes the ascension  of the water through channels that are called xylem. there are also two molecule forces that are involved: the intra-water molecules cohesion (water molecules stick to each other) and the adhesion when the water molecules stick to the channels they are running in. this is what enables water to go from the roots to the top of a tall tree.