Needed on both questions asap! 20 points

1. Adaptive radiation

The adaptive radiation is an evolutionary process in which rapid diversification occurs from a single ancestral species. The reasons for such rapid diversification, thus development of new physical traits, can occur from multiple reasons, such as sudden climate change, change in the food sources, or extinction of other species. Most often it is a response where there are numerous niches in the food chain opened up and free for taking, so the organisms develop new traits quickly in order to take over those niches.

2. It is dated from about 605-600 million years ago

The first multi-cellular organisms have appeared around 600 million years ago, at least from what is known so far from the fossils and the evidence of activities left from the organisms. They were very simple organisms, and the closest we can compare to in the present are the bacteria. In order for these multi-cellular organisms to develop, around 2.9 billion years where needed, as the first single-cellular organisms appeared around 3.5 billion years ago.

the transfer of energy between two molecules spaced just nanometers apart plays a key role in many technologies, including photovoltaics, quantum information systems, lighting, and sensors, as well as in biophysics to measure nanometer distances and in photosynthesis. but an open question in this area is what effect, if any, the surrounding photonic environment has on this nanoscale energy transfer. by designing and performing a carefully controlled experiment to answer this question, scientists have settled the debate and found clues to improving the efficiency of many of the technologies that rely on this process.

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