Which of the following characteristics makes all the types of RNA different? (Select all that are true)
a Shape
b Where they are located in the cell
c Elements that make them
d Their functions

If a cell's main function is to produce proteins to be excreted, which organelles would you expect to be larger

Apaleontologist finds a plant fossil that shows that the plant had seeds. what can the paleontologist conclude?

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.