$11$Read the following passage and answer the questions that follow. Prevention is the frontline response to drug use. Effective interventions address the underlying conditions contributing to drug use, such as a lack of connection to family or community, instability, insecurity, trauma, mental health issues, etc. When addressed, these factors can effectively prevent the initiation of drug use and the progression to drug use disorders. Study the few key figures of drug use given below and answer the questions that follow. 2025_CBSE_Biology_Set_Region6_Subset_Set2_QUNKNOWN___p11_28

2025_CBSE_Biology_Set_Region6_Subset_Set2_QUNKNOWN___p11_28

People with drug use disorders, 2022 (in millions) Table No. 1 Table No. 2 3 3 3 (a) What do you infer from the figures in Table No. 1 about the people with drug use disorders, 2022 (in million) ? State any two of your observations. (b) How are Hepatitis C and HIV related to drug use disorders by people, as shown in Table No. 2 ? State the correlation between the two. (c) (i) Give the scientific name of (p) shown in Table No. 1.

OR

(c) (ii) Give the scientific name of (q) shown in Table No. 1. 30. Read the following passage and answer the questions that follow. According to evolutionary theory, every evolutionary change involves the substitution of a new gene for the old one and the new allele arises from the old one. Continuous accumulation of changes in the DNA coding for proteins leads to evolutionary differences. The chemical composition of DNA is basically the same in all living beings, except for differences in the sequence of nitrogenous bases. Given below are percentage relative similarities between human DNA and DNA of other vertebrates :

S.No.	Vertebrates	Percentage similarities
1.	Chimpanzee	100
2.	Gibbon	94
3.	Rhesus Monkey	88
4.	Lemur	47
5.	Treeshrew	28
6.	Mouse	21
7.	Hedgehog	19
8.	Chicken	10

Biology · Human Health and Disease