Hydropower
uses the energy of moving water
is a nonrenewable energy source
releases toxins, like nitrogen oxide
depends on time of day and time of year

The image shows embryos of three vertebrate classes

Differences between compact bone and cartilage

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