Answer: There are two ways to determine the age of a dinosaur fossil. One is called relative geologic time, which involves deciding whether one dinosaur fossil is older or younger than another. Geologists then measure the proportion of parent and daughter atoms present in the ash crystals to determine the crystal's age.
Explanation:
Answer: Located within the thermosphere, the ionosphere is made of electrically charged gas particles (ionized). The ionosphere extends from 37 to 190 miles (60-300 km) above the earth's surface. It is divided into three regions or layers; the F-Region, E-Layer, and D-Layer.
Explanation:
The answer is C. <span> Accessibility to nutrients makes the mouth a favorable habitat.
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Answer:
humanity has a 95% probability of being extinct in 7,800,000 years
Organisms at point C will have hair.<span> All organisms on the main right branch will have bilateral symmetry.</span><span> All of the organisms from point B on are terrestrial.</span>
