<span>Protists are often classified by the characteristics that resemble those of fungi, plants, and animals.</span>
Carbon 14 has a half life of 5,730 years. Scientists measure how much carbon 14 the rock has. For objects older than 50,000 years, scientists will test the age of the things surrounding it.
Chemical energy is converted into chemical energy.
<em>Answer : </em>chemical-A.