MCQ
Pyrimidine present in RNA are :
- ACytosine and Thymine
- BAdenine and Guanine
- ✓Cytosine and Uracil
- DThymine and Uracil
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If mortality is represented by $-D$
If immigration is represented by $-I$
If emigration is represented by $-E$
If population density is represented by $-N$
Then population density at time $t+1$ is represented by
$R$ - The lower the $BOD$ of water, lower is its polluting potentials.
| Column-I | Column-II |
| $(A)$ Barrier | $(1)$ Copper$-T$ |
| $(B)$ $IUD$ | $(2)$ Vasectomy and tubectomy |
| $(C)$ Surgical technique | $(3)$ Condoms cervical Caps |
| $(D)$ Adminisitrating hormones | $(4)$ Oral, pill and saheli |