Answer:
[The recent activities of fossil fuel combustion has had adverse effects on the ozone layer]- B.
The action or process of fertilizing an egg, female animal, or plant, involving the fusion of male and female gametes to form a zygote. The gametes that participate in fertilisation of plants are the sperm (male), and the egg cell, and in flowering plants a second fertilisation event involves another sperm cell and the central cell which is a second female gamete. In flowering plants there are two sperm from each pollen grain.
Carrot- 1500
rabbit- 150
snake- 15
hawk- 1.5