it seems that the new infection has a different form of the transpeptidase enzyme that penicillin can't bind to. what is one other way suggested by the theory in the control of growth simulation by which a previously sensitive bacterial strain can become resistant to penicillin

identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.

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explanation:

plate tectonics and volcanic euptions

over time, plate tectonic processes cause continents to move to different positions on the globe.

for example, britain was near to the equator 300 million years ago, and therefore was hotter than it is today. for further details look at our climate through time poster or online map.

the movement of the plates also causes volcanoes and mountains to form and these too can contribute to a change in climate.

mountain ranges formed by plate tectonics. large mountain chains can influence the circulation of air around the globe, and consequently influence the climate.   warm air might be deflected somewhere cooler by the mountains.