Polarity, or whether a molecule is charged, is a property of a molecule that determines whether it will pass through a membrane
<span> myxoamoeba or swarmers </span>
B.
Asbestos was used in housing for many years because it was cheap to manufacture and was amazingly heat-resistant, but was found to be incredibly dangerous, causing innumerous accounts of lung cancer and related problems.
This is from memory, but I will double check after I answer.
The kind of variation that must exist in a population that has a wide range of phenotypes is GENETIC VARIATION.
Genetic variation is started in a population's gene pools which contains all alleles. It is <span>is measured with allele frequency which are calculated by # of specific allele divided by total # of alleles.</span>