Plants require nitrogen fixed in compounds to grow. A higher the percentage of nitrogen results in improved plant growth. Which compound should you add to your fertilizer to get the best results.
A. (NH4)2SO4
B. CON HA
C. NH4NO3
D. N2F2

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.

i think it's letter a.

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally