pyramids of numbers and bio mass

• • Pyramids of number show the number of organisms at each stage in a food chain.
  • Pyramids of biomass show the mass of organisms at each stage in a food chain
• Mass is a measure of the amount of matter in an object or substance. It is usually measured in grams or kilograms and is a fundamental property of physical objects. Unlike weight, which can change depending on the gravitational pull, mass remains constant regardless of location.
• pyramid of biomass shows how biomass reduces as we move up the pyramid
• bio mass is living tissue
• pyramids of number:

  Energy is lost to the surroundings from one level to the next, so there are usually fewer organisms at each level in this food chain.

  A lot of clover is needed to support the snail population. A thrush eats lots of snails, and a hawk eats lots of thrushes, so the population of hawks is very small.