Complete each nuclear fission reaction. 235 92 u + 1 0 n → 90 36 kr + a 56 ba + 3 1 0 n a: 239 94 pu + 1 0 n → b c ba + 91 38 sr + 3 1 0 n b: c:

Answer : In the first reaction, 'A' is the atomic mass of barium = 143

In the second reaction, 'B' is the atomic mass of barium = 145 and 'C' is the atomic number of barium = 56

Explanation :

Nuclear fusion : It is a process which involves the conversion of two small nuclei to form a heavy nuclei along with release of energy.

Nuclear fission : It is a process which involves the conversion of a heavier nuclei into two or more small and stable nuclei along with the release of energy.

The complete nuclear fission reaction are,

(1)

In this reaction, 'A' is the atomic mass of barium = 143

(2)

In this reaction, 'B' is the atomic mass of barium = 145 and 'C' is the atomic number of barium = 56

the statement is true

"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."