Question: how do the muscular system and digestive system relate to one another? a. the muscular system keeps bad food out of your digestive system and leads it straight to your excretory system. b. if your body needs more food and you cannot eat the muscular system the digestive system by pulling it from your skeletal system. c. the muscular system looks similar to the digestive system. d. the muscular system moves the food through the digestive system so nutrients can get to all parts of your body

I believe the answer is D. Hope this helps!

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

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