**Allen's Rule:**

Allen's rule is a biological principle that states that animals living in colder climates tend to have shorter extremities, such as limbs, ears, and tails, compared to animals of the same species living in warmer climates. Conversely, animals living in warmer climates tend to have longer extremities to dissipate heat more effectively.

This rule was proposed by American zoologist Joel Asaph Allen in the late 19th century and is based on the observation that animals with shorter extremities have a smaller surface area, which reduces heat loss in cold environments. On the other hand, animals with longer extremities have a larger surface area, which aids in heat dissipation in warm environments.

**Explanation of 150 Days Time Table for NEET:**

The 150 Days Time Table for NEET is a study plan designed to help students effectively prepare for the National Eligibility cum Entrance Test (NEET) within a span of 150 days. NEET is a highly competitive entrance exam in India for students aspiring to pursue undergraduate medical and dental courses.

The 150 Days Time Table is structured to cover all the essential topics and subjects included in the NEET syllabus. It provides a systematic approach to ensure comprehensive preparation and efficient utilization of time. Here is a breakdown of the time table:

1. **Subject-wise Distribution**: The time table divides the 150 days into specific periods for each subject, such as Biology, Physics, and Chemistry. This allows students to allocate sufficient time to cover all the subjects thoroughly.

2. **Topic-wise Allocation**: Within each subject, the time table further breaks down the days into specific topics. This ensures that students have a clear roadmap of which topics to focus on each day, preventing any confusion or gaps in their preparation.

3. **Revision and Practice**: The time table also incorporates regular revision and practice sessions. It includes dedicated slots for revisiting previously covered topics and solving practice questions and sample papers. This helps students reinforce their understanding and improve their problem-solving skills.

4. **Mock Tests and Analysis**: The time table allocates days for taking mock tests, which simulate the actual NEET exam. After completing these tests, students are encouraged to analyze their performance, identify weak areas, and work on improving them.

5. **Balanced Approach**: The time table ensures a balanced distribution of study hours for each subject, preventing excessive focus on one subject at the expense of others. This helps in maintaining a comprehensive understanding of all the subjects and prevents knowledge gaps.

By following the 150 Days Time Table for NEET, students can effectively manage their study schedule, cover the entire syllabus, and improve their chances of performing well in the NEET exam. However, it is important to note that each student's learning pace may vary, and adjustments can be made to the time table based on individual needs and preferences.