Babies with very low or very high birth weight are less likely to survive. The graph shows the percentage of babies born at different weights. Which statement is a valid claim that could be made using the data in the graph? directional selection is occurring because the graph favors an extreme. Stabilizing selection is occurring because the average is favored. Disruptive selection is occurring because the two extremes are favored. Biodiversity variation is occurring because there is an increase in trait variation.

Spider crabs live in the shallow regions of the ocean floor. algae tend to grow on the surface of spider crabs. the algae provide the crabs protection from predators by camouflaging them. the spider crabs give the algae shelter. what does this description suggest? 1. the algae are parasites of the spider crabs. 2. the algae and the spider crabs have a mutualistic relationship. 3. the spider crabs are commensals, and the algae are parasites. 4. the spider crabs benefit from the algae living on them. 5. the spider crabs are parasites of the algae.