The answer is option C "Warm air rises as cooler, denser air falls." Convection is heat transfer between two objects for example a hot metal pot to a spoon. During convection hot air rises and cold air (or denser air) sinks.
Hope this helps.
Answer: Paleozoic
Explanation:
Not as many rocks existed from the precambrian era
Answer: I think it’s B but I’m not sure sorry
Answer - Genetic Engineering (Confidently Correct)
Reason - With Technology we can change the genetics of a species and help it adapt to it env. to survive longer and reproduce.
An enormous cloud of gas and dust that contracts due to gravity and forms stars is called a nebula.