A sourdough bread starter is a colony of yeast that baker keep alive, sometimes for years. The bread is made by
removing a portion of the colony, which is replaced by
adding back an equal volume of a solution of water,
sugar, and flour. Is the starter a model for exponential
growth or logistic growth? Explain your reasoning.

Sediment layers stop lateral spreading when: they encounter a barrier they encounter an opposing current they run out of additional sedimentary material

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?

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