Greenhouse gases create an insulation layer in the atmosphere and retain heat for our planet earth. much of this gas is produced by microorganisms living in the environment and in the digestive tracts of animals. identify a greenhouse gas that can be produced primarily by microorganisms:

Compare and contrast nutrient limitation in soil vs. nutrient limitation in aquatic ecosystems

The body is protected against harmful flu viruses by

The graph shows the amount of global warming happening in different ecosystems. which populations of organisms will likely decline the most as a result of climate change, and why? a.coral reefs because of the loss of the symbiotic algae living within their bodies b.penguin populations because the fish they eat will move into warmer waters c.mountain-dwelling birds because rising sea levels will relocate their food sources d.large cats in the rainforest because of decreased habitat loss for their prey