A.) Guanine = 45
B.) Adenine = (100 - 90 )/ 2 = 10/2 = 5
Hope this helps!
Answer:
Both plant and animal cells have a nucleus and chloroplast where protein synthesis takes place.
Answer:
The correct answer is option (D) there was a time in Pennsylvania history when dinosaur existed.
Explanation: A paleontologist discovers a rock slab on which the footprints of a Pennsylvania dinosaur are well preserved. This means that there was a time in Pennsylvania history when dinosaur existed in this area. Here fossil is a fragment of rock on which the footprints of dinosaur is present.
