How to make a biomass pyramid?

Question

i have a project for school and it requires a pyramid with 3 different things on the side. on side needs to be energy, the other biomass,and the other numbers.

i do not know how to measure biomass? here are some websites that kind of explain biomass but they do not explain how to find it?

http://qldscienceteachers.tripod.com/junior/biology/foodchains.html

http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/F/FoodChains.html

http://64.233.169.104/search?q=cache:wZ9Zomk34YcJ:www.amherst.ny.us/archive/PDF/CompPlan/schools/kor/ecology%2520mega%2520notes.pdf+biotic+organism+food+pyramid&hl=en&ct=clnk&cd=2&gl=us

also i do not understand what the directions mean by numbers. and trust me I'm not leaving anything out all it says is biomass and numbers there is nothing that explains how to obtian it.

i would also appresheate pictures and examples of how to find these things if you would be able to.

Answer 1

Biomass is just the total mass (weight) of all the living matter or organisms within a given unit of environmental area.  Units are in mass per area (for example, it might be grams per square meter.)  

Biomass is related to numbers, but they are not the same.  If you have earthworms or grass plants, it takes LOTS of them to make a ton of biomass.  If you have elephants, it takes only about 1/5 of one to make a ton of biomass.  So for numbers, you count individual animals or plants.