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.

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.