They are also used to see what kinds of major geological events took place such as earthquakes or major weather changes such as ice storms.
Heterotrophic. Only plants have cell walls, so that goes to phytoplankton, andwhales have thousands of cells, so unicellular goes to plankton again. Mammals aren't prokaryotic, so we're left with heterotrophic.
The land and the aquatic are the two types of global food webs
Answer:
1. B. Methane
2. C. Methane collection system
