What type of fossil forms when the impression from the remains of an organism is filled in with soil and hardens into the shape of the original organism?

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.

b) nuclear ive learned that in a pedtrodic table

the answer your looking for is c).

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.