4. A microbe from an ecosystem that exists in the same arctic region has infected the whale population. The graph below shows the new carrying capacity for the whale population. N represents population number, t represents time, and K represents carrying capacity.
Explain how these microbes have affected the whale population. Does this new evidence change the seal and killer whale relationship? Does this new relationship represent a sigmoid or peak phenomenon? Please provide supporting details.

Answer asap 50 points which of the following distinguishes the soil composition of grassland? 1. the soil supports large trees with thick, long roots, so horizon b needs to be deep enough to sustain larger flora. 2. the soil supports large trees with thick, long roots, so horizon a needs to be deep enough to sustain larger flora. 3. the soil supports small plants and shrubs with short roots, so horizon a needs to be deep enough to sustain smaller flora. 4. the soil supports small plants and shrubs with short roots, so horizon b needs to be deep enough to sustain smaller flora.