Which of the following structures are found in gymnosperms but not in angiosperms?
a. seeds
b. pollen
c. flowers
d. cones

What protects the lining of the stomach from acidic gastric juices?

Aflashlight battery is an example of a) potential energy b) kinetic energy c) thermal energy d) solar energy

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.