A student is observing a group of cells under a microscope. What observation would help her conclude that they are plant cells? Question 16 options: The presence of nuclei can be clearly detected within each cell. The cells appear well-defined, indicating the presence of cell walls. The presence of mitochondria can be clearly detected within each cell. The cytoplasm in which the cell organelles are embedded can be clearly seen.

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.