Climate changes thats what im guessing .. not too sure though ... sorry
There are four gas giants<span> in our Solar System – Jupiter, Saturn, Uranus, and Neptune. The </span>gas giants<span> in our Solar Systems have a number of similar </span>characteristics<span>.
hope dis helps</span>
Trial and Error
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Mutations<span> are changes in the DNA. A single </span>mutation<span> can have a large effect, but in many cases, change is based on the accumulation of many </span>mutations<span>. Gene flow is any movement of genes from one population to another and is an important source of the genetic </span>variation<span>.</span>
Individual, population, community, biome, ecosystem
