Part E In addition to natural factors, human activity can also alter ecosystems. Conduct research on a human
activity that currently affects or can theoretically affect your chosen ecosystem. Use your food web model
to explain how this change can affect the competition for food resources.

b. lithosphere, asthenosphere, mesosphere   is the answer most likely

the circled areas are referred to   as sunspots.   the sunspots are cooler than the   surrounding area.

sunspots are temporary phenomena on the photosphere of the sun that appear visibly as dark spots compared to surrounding regions. they correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.