Cyanobacteria that can perform nitrogen fixation: a. do so on membranes called thylakoids b. cannot also perform aerobic photosynthesis c. are part of the community of organisms at deep-sea vents d. provide both fixed nitrogen and fixed carbon dioxide to other organisms e. use this metabolic pathway to provide themselves with glucose

The instructions for making proteins come originally from

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

How does human environment effect the biosphere