Perseverance was the third robotic visitor from Earth to arrive at Mars in February 2021. Earlier this month, two other spacecraft, Hope from the United Arab Emirates and Tianwen-1 from China, entered orbit around Mars. Why is there so much interest in Mars? How are the three missions similar and different? Review the infographic for inspiration.

c. establishing proper sleep hygiene

a) carbon, hydrogen

b) carbon, hydrogen, oxygen, nitrogen

c) carbon, hydrogen, oxygen, nitrogen, phosphorus

d) sugar

e) amino acid

f) nucleotide

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.