1. The diagrams show pollen grains from three different species of plant as they appear under the microscope. The diagrams are all to the same scale. *

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.

Which statement describes how favorable traits in a population relate to natural selection? they are the only traits that ever exist in the population. they build in the population over time. they are rarely passed on to offspring. they are found only in a few individuals within the population.

When a chemical spill has occurred on your clothes you should 1. scream for 2. run under the shower and turn it on 3. use the eye wash station 4. grab the first aid kit