Explanation:
Amino acid is made of an Amino group , a Carboxyl group And an R group . there is also an additional H there .
15)C
16)D because the function of mitochondria is providing energy
17)B cell wall
18)C cell membrane
19)C plantae
20)B cytoplasm
An intrusion is the action of intruding or intruding. I hope I helped a little!! :-)
I believe the correct answer from the choices listed above is the last option. Most of the particles went through the foil, but some were deflected. This<span> proved that atom has mostly empty space,there is positively charged nucleas at the centre of the atom and the electrons revolve round the neucleus at large distances from it in circular orbits.</span>