An ecology student noticed that big moose lake has a higher nitrogen level than brant lake, but has lower algae growth. this data surprised her, because algae often flourish in water with high nitrogen level. develop a hypothesis to explain the surprisingly low algae growth in big moose lake.

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this

because it travels in smaller waves then all other colors, causing it to be the most visible color