simple equipment/tools to gather data and extend senses.
data to conduct a reasonable explanation.
descriptions, explanations, predictions, and models using evidence.
have basic needs. They can survive only in environments in which
their needs can be met.
animals depend on plants. Some animals eat plants for food.
Others eat animals that eat plants.
ecosystems, the major source of energy is sunlight. Energy entering
ecosystems as sunlight is transferred by producers into chemical
energy through photosynthesis. That energy then passes from
organism to organism in food webs. (5-8)
and Space Science
sun provides light and heat necessary to maintain the temperature
of the earth.
changes from day to day and over the seasons.
sun is the major source of energy for phenomena on the earth's
surface, such as growth of plants, winds, ocean currents, and
the water cycle. (5-8)