Atomic mass is determined by the number of protons plus the number of neutrons
1) all of the above
2) rocketry
3) 1
4) not sure about this one because magnitude of one was the brightest then 2, then 3. 6 was the least brightest and 6+ or -1 or 0 or you could say, below 1 did not exist at that time..
A
addition mutationadeition mutation
so its A
The root cap is a small structure but one that serves a very important function for a plant. Protecting the root apical meristem allows for primary growth in the root, which paves the way for lengthening of the plant as well as cell specialization.
