energy and ecosystems

Question 1

role of photosynthesis in carbon cycle

Answer 1

carbon dioxide reduced to form organic molecules

Question 2

ecosystem definition

Answer 2

organisms and non living components working together in a habitat

Question 3

why is GPP value lower that light energy available to the ecosystem

Answer 3

not all of the light falls on the leaves
some of the light is reflected from the surface of the leaf
some of the light misses the chloroplasts and passes through the leaf
some of the light is the wrong wavelength to be absorbed by the chlorophyll

Question 4

why does respiration affect production of biomass

Answer 4

GPP- R= NPP
organic molecules used in respiration to provide energy
because the more organic molecules are used in respiration, the less is available for the production og biomass