The first person that answered is correct just to let you know!
Cell, the smallest unit that can exist independently
Properly identifying each species.
Accurately recording his findings.
Not interfering with ecosystem while studying the birds.
A short period of time, after the onset of puberty. The first mature eggs starts to be released from the ovaries during menstruation. Menstruation may first occur during the start of puberty in women, it may start as early as 8 years old and can start late as 16 years old. Menstruation is the process wherein not fertilized eggs are being broken down and released from the body.
