I think they're set in a vertical motion. Up to the crest and down towards the trough. Something about kinetic energy
Answer:
I'm not sure but in my condition the answer is a
Na: positive; OH: negative
A useful index fossil must be distinctive or easily recognizable, abundant, and have a wide geographic distribution and a short range through time.
<span>when athletes exercise,or their body works out, they intake more oxygen and let out more canbon di oxide. So their heart pumping speed increases which results in higher breathing rates and higher pulse. So they are physically more fit than a person who doesn't workout.</span>
