I believe the answer is: Protons and Neutrons
Protons weigh 1 amu while neutrons also weigh 1 amu. I’m not sure if they are talking about how many there is.
10% is normally how it works .
For example like 1,000 is the top the next level would be 100 then the next would be 10
Rivers/streams are eroded and can be eroded
Answer:
it wants you to conclude what you have learned by writing if you think there is a link between the impact and the extinction of the dinosaurs by stateing any similarities to the two events and provide evidence to surpport your claim
Explanation: