Because the membrane is made of lipids, typically fat-soluble (non-polar) molecules are able to pass easily. In addition, smaller, uncharged polar molecules can also pass through. Use the attached diagram to help you understand.
Typical changes in temperature would not influence a population size in a desert. The correct option among all the options that are given in the question is the first option or option "a". The changes in temperature will never effect the population of a desert very severely. Other options given in the question will definitely have an impact on the population.
Concept 19 The DNA molecule<span> is shaped like a twisted ladder. James Watson and Francis Crick solved the structure of </span>DNA<span>. Other scientists, like </span>Rosalind Franklin<span> and Maurice Wilkins, also </span>contributed<span> to this discovery.</span>
When two copies are present. Hope you have a great day :)
