Correct Answer: A. 25.75^o

Explanation

25° 45' = 25° + \(\frac{45}{60}\)°

= 25° + 0.75°

= 25.75°

Correct Answer: A. reaction vessel feels cool during the reaction

Correct Answer: C. Syncline

Correct Answer: B. Malthusian population theory

Explanation

The Malthusian population theory highlights the relationship between population and means of subsistence. The main features of Malthusian theory about population are; i. That population was growing at a geometric progressions such as 2,4,6,8,16,32, etc, while food production or supply was growing at an arithmetical progression such as 1,2,3,4,5, etc. ii. That there is a tendency for all living things to grow beyond the food available to them iii. That unless population increase is matched with means of subsistence, negative and positive checks will come into force. iv. That the checks can be war, diseases, epidemics and famine. v. That population is essentially limited by the means of subsistence.

Correct Answer: B) it becomes fully grown, mouth becomes wider, tail disappears completely

Explanation

This Biology question is asking what happens to a tadpole after it is 45 days old. The options available are A, B, C, and D. Option B is the correct answer. After 45 days, a tadpole undergoes a process called metamorphosis, which is a transformation from its aquatic larval stage to an adult form. During this transformation, the tadpole's body undergoes several changes. The tail disappears completely, and the mouth becomes wider while the external gills disappear entirely. Option A states that the mouth becomes wider, the horny jaw disappears completely, and the tadpole becomes fully grown. However, this is incorrect. Option C states that the external gill disappears completely, the mouth becomes wider, and the tadpole becomes fully grown. This option is partly correct, but it misses the fact that the tail disappears entirely, which is a significant transformation during metamorphosis. Option D states that the tadpole becomes fully grown, the mouth becomes wider, and the slit disappears partially. This option is not correct because there is no such thing as a slit in tadpoles. In summary, after 45 days, a tadpole undergoes metamorphosis, and its tail disappears entirely, while its mouth becomes wider, and its external gills disappear entirely. Option B is the correct answer.

Correct Answer: A. Jezebel

Correct Answer: A. virus

Correct Answer: C. hid the prophets in caves

Correct Answer: B. \(\frac{1}{12}\)

Correct Answer: D. Central banks