These had no leaves or roots, instead they had green photosynthetic stems which served as both anchors in the ground and photosynthetic surface.
True. Greenhouse gases are composed of many molecular components that provide and are necessary for life to still exist on earth. For example, the carbon dioxide and the others alike. However, when these exceed the necessary level and amount in the atmosphere, they cause tremendous increase in temperature.
Answer:
C. The drum will work on Earth and in outer space. The drum will not work under the water.
In plants the reproductive structure that produces pollen and seeds is the xylem is the answer
