Its 18 electron
1st orbital : maximum = 2 electrons
2nd orbital : maximum = 8 electrons
3rd orbital : maximum = 8 electrons
2+8+8 = 18 electrons
D. Uracil which is what is use in RNa instead of thymine
<span>well i take this test before and the correct answer is :A They produce food by photosynthesis</span>
Broccoli is found in it
hope it helps
That would be catalysts.
Catalysts accelerate (speed up) chemical reactions without damaging itself. They do this by decreasing the activation energy of a chemical reaction.
Enzymes are a type of catalysts.