Which phrase describes the phenomenon that implies that small atmospheric changes affect
the weather weeks or months later?

A) the butterfly effect
B) short-range forecast
C) long-range forecast
D) automated weather

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

Match each symbol with its description.