A. natural enemies destroy their eggs on land
B. water nourishes their embryos and their young ones
C. they are close to their ancestors and imitate them
D. the temperature on land is not suitable for the development of their embryos
Correct Answer: Option D
D. the temperature on land is not suitable for the development of their embryos

![An immersion heater rated 2.0A; 240V is used to boil water from temperature 52°C to 100°C. If the mass of the water is 2.5kg. determine the time taken to boil the water. [specific heat capacity of water = 4.2 x 10³ jkg−¹ k−¹ ] past-questions-and-answers](https://erudites.ng/wp-content/uploads/2020/06/past-questions-and-answers-150x150.jpg)