31. In a lake ecosystem the food chain for trout species contains 27,000kcal at the algae producer trophic level. How many kcal are found in the secondary consumer trophic level for minnows.

i think that it is plants

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.