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UNIT 4, image, image, image, image, image, image, image, image, image,…

- - - - Occurs when planet Earth rotates about its orbit around the Sun.
      - It lasts 365 days and, approximately.
      - Due to the inclination of the earth and the translation movement, light and heat reach certain places more at some times of the year than others.
      - This gives the four seasons: spring, summer, autumn, and winter.
    - - Occurs when the Earth rotates on its own axis.
      - A complete turn of the planet takes, approximately 24 hours.
      - This movement makes days and nights because in a a part of the planet is illuminated by the Sun, the other is dark.
      - This movement causes diurnal warming and night cooling.
  - - - It is the transition between spring and fall.
      - It is characterized by its high temperatures and low rainfall.
    - - It is the transition between fall and spring.
      - Temperature drops and it is very cold. In some regions present snow storms.
    - - It is the transition between summer and winter.
      - At this age the ambient temperature decreases, the rains begin, the leaves of the plants dry to fall, wind appears.
    - - During that time the climate is cool and the rains are abundant.
      - It favors the plants to begin to sprout, flourish and bear fruit.
      - It is the transition between winter and summer.
- - - - Solar heat evaporates water from the earth's surface and from the oceans.
      - Water vapor rises into the atmosphere and, as it cools, forms clouds.
      - When the amount of drops of water increase in the clouds, the water falls towards the earth's surface in the form of rain or snow.
    - - When the Sun heats the masses of air, these ones move and produce the wind.
      - It facilitates the pollination of plants.
      - Wind helps in the regulation of the temperature of the planet.
    - - Plants absorb sunlight for elaborating their own food through the photosynthesis process.
      - Plants need sunlight for the seeds' germination process.
      - Without sunlight, most plants could not live and there would have not enough food for several animals and human beings.
      - Most diurnal animals' organisms are functioning correctly during sunlight's presence.
      - Human beings use sunlight for creating renewable energy.
      - Sunlight has an influence on animals' behavior, such as their migration and reproduction.
    - - The Sun heats the Earth's surface.
      - This generates the conditions for plant growth.
      - The increased temperature evaporates the water that is contained on the floor. This humidity regulates the temperature.