1. Explain how the concept of primary productivity gives rise to the idea of bottom up control in ecosystems. Give examples from your studies in ESS of ecosystems that have different levels
of complexity due to differences in primary productivity.

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

How many autosomes are in this human karyotype? how many sex chromosomes?

If a young male's body is just beginning the process of producing sperm, when is it likely that he would ejaculate mature, viable sperm"