1. An ecosystem has an average of 50 cm of rain per year. Look at the rainfall graph over an 11 year period of lower than average rainfall in this ecosystem, predict how the biotic factors within this ecosystem would respond. Make sure to describe how eventually all trophic levels would be affected. Be sure to explain your reasoning.

Which units ate used to measure both velocity and speed? check all that apply

To determine if a particular plant is homozygous or heterozygous, you would have to test cross with a

According to the rna world hypothesis, rna acted as the genetic material and catalyzed reactions in ancient cells. what conclusion can you draw from this?               a.  this implies that dna and proteins aren't essential in cells today.    b.  this implies that rna can catalyze any chemical reaction that enzymes catalyze.    c.  this implies that if a cell has a problem with its dna, its rna can compensate for the damaged dna.    d.  this implies that dna and proteins evolved after rna.