Haemoglobin is a protein made of two alpha polypeptides and two beta polypeptides. Each alpha polypeptide has 141 amino acids and each beta polypeptide has 146 amino acids. Calculate the minimum number of DNA bases needed to code for the number of amino acids in one alpha polypeptide.

Individuals do not compete directly for resources, but are prey for the same predator

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere