What is mechanical digestion? (Choose all that apply) * 1.The teeth do it in the digestive system

2.the stomach does it in the digestive system

3.Breaking down large pieces of food into small particles of food

4.Crushing, breaking, munching and churning

5.Digestive enzymes do this in different locations around the digestive system

6.The mechanism that allows absorption to happen
Breaking down

7.macromolecules into smaller monomers

PLEASE HELP!!

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg 

links? do you have a link? i don't see anything?