Algunas aves se alimentan de ectoparásitos de la piel de algunos animales como elefantes o hipopótamos

essentially, one bacterial cell splits into two daugurer cells. bacterial offspring don't need or get care from their parents because they are in a sense their own parents. that said, some bacteria can and do depend on other bacteria especially in harsh environments such as bacterial microfilms in hot water tanks.

the planets have a circular orbit around the sun.