The major benefit of solar energy is its low: a) cost b) pollution c) maintenance d) complexity

Consider the diagram below, which represents components of the biosphere. what do the two arrows in the diagram most likely represent? a. radiation b. photosynthesis c. cellular respiration d. energy conversions will give to anyone who answers quickly

Which of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs

When ash and dust begin to settle on the ground, they eventually become compacted by