What are two other abiotic factors that could also be studied to help determine the health of the streams in the two watersheds? -aquatic insects and sunlight

-phytoplankton and water depth

-light penetration and water flow rate

-water flow rate and macroinvertebrates

I'm not completely sure about this answer because our unit on that was very short. So please don't be upset if its incorrect.

The answer is phytoplankton and water depth, because in order for any ecosystem to survive they need the producer population (Plants)

Middle School

Basic Rank

burning of wood and coal

explanation:

the panel also concluded there's a better than 95 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in earth's temperatures over the past 50 years.