1. Hypothesize in what type of environments it would be advantageous for a protist to be autotrophic, heterotrophic, or mixotrophic.
2. Many algae are photosynthetic, like plants. Why then are they not classified as such?

answer; /// i believe the correct answer is (thrombocytopenia); (a)

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.

i'd have to say the answer is probable the second option "the geosphere interacting with the atmosphere"