How can fossils help us
understand the Earth's history?

By studying fossils, we can tell how long someone has been on the earth for.

Explanation: We can easily learn where they lived, how they lived, and their past.

Sexual reproduction is the process in which male and female gamete fuse to form zygote through a process called fertilization and it is important for plants as it provides variation to the progeny that helps in the better survival and help it to gain its own uniqueness within the species and remove the unwanted genes and lower the risk of getting a disease