The activity of k 40 in a 70 kg human body is estimated to be 120 nci what is this activity in becquerels

The activity of a sample is determined in terms of the number of nuclear disintegrations in a second. The Curie or Ci is a common unit for activity measurement. Bq or Becquerel refers to the SI unit for radiation activity measurement.  

The activity of K-40 in 70 kg human body is 120 nCi

The relationship between Curie and Becquerel are as follows:  

1Ci = 3.7 × 10¹⁰ Bq

1nCi = 37 Bq

Thus, 120 nCi × 37 Bq / 1nCi = 4.4 × 10³ Bq.  

Hence, the activity of K-40 in a 70 Kg human body is 4.4 × 10³ Bq .

i think its the first one

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.