Answer:
It requires more resources and time than asexual reproduction.
Step-by-step explanation:
Sexual reproduction is a type of reproduction that involves apposite gametes coming together to form a zygote. Sexual reproduction allows the mixing of genetic materials from the different individuals. The development of the zygote requires nutrients from the female body to develop into an adult. In mammals the embryo develops inside the mother's womb. Here it is nourished and protected from the external environment and in humans they develop within nine months.