Which shows correctly how energy cycles in an ecosystem?
a. sun producers consumers decomposers
b. consumers sun producers decomposers
c. decomposers sun consumers producers

What kind of crystalline solid is graphite? o a. molecular solid b. metallic solid o c. network solid d. ionic solid

Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?

Which of the following requires the use of energy and the of transport proteins to move a molecule across a cell membrane?