Fast I will give branliest

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

Predict the results of a two base insertion or deletion in a strand of dna that codes for a protien, how does this differ from a three base insertion or deletion?

The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change