Describe one special quality of water that makes it the basis for life on Earth.

Does all life on Earth require sunshine?

Molecules of which gas were needed in Earths atmosphere for life to evolve from living in the sea to living on the land? Why?

Explain (a) why the flow of energy through the biosphere depends on the cycling of nutrients, and (b) why the cycling of nutrients depends on gravity.

Which of the following statements about the "tree of life" is correct?     Before Carl Woese, all cellular life forms were classified into five kingdoms: Monera, Fungi, Plants, Animals, and Protists.     Using rRNA genes for phylogenetic reconstruction, Carl Woese uncovered a previously unrecognized group that was thought to be bacteria. Afterward, all cellular life forms were classified into three domains: Archaea, Bacteria, and Eucarya.     It is found that the relationship among Archaea, Bacteria, and Eucarya changes, depending on which gene was used for phylogenetic reconstruction.     All of the above

It is estimated that the total amount of oxygen (O2) contained in BIFs is equivalent to 6.6% of the oxygen present in the modern atmosphere. This is quite impressive given that the atmosphere during Archaean and early Proterozoic times was largely devoid of oxygen! Therefore, this reflects the photosynthetic efficiency of the early biosphere, coupled with its operation over long periods of time. Knowing that the mass of the modern atmosphere is 5.01×1018 kg, of which 21% is oxygen, what is the mass (in kilograms) of oxygen contained within BIFs? Answer x 1016 kg of O2 contained in BIF deposits     Knowing that the molecular mass of O2 is 32 g/mole (0.032 kg/mole), how many moles of O2 are contained within BIFs? Answer x 1018 moles of O2 contained in BIF deposits   Not sure what the "answers" are?

It is estimated that the total amount of oxygen (O2) contained in BIFs is equivalent to 6.6% of the oxygen present in the modern atmosphere. This is quite impressive given that the atmosphere during Archaean and early Proterozoic times was largely devoid of oxygen! Therefore, this reflects the photosynthetic efficiency of the early biosphere, coupled with its operation over long periods of time. Knowing that the mass of the modern atmosphere is 5.01×1018 kg, of which 21% is oxygen, what is the mass (in kilograms) of oxygen contained within BIFs?

E WB 5th-8t C Clever | Po Sign Out Final Pro E Inbox i summitlearning.org 1954405/1/0 米 ok 50 gmail ok C no O shut up C Clever Log in YouTube 50+ Inbox (46) - 503- Gisselle Flores Energy Flow in Ecosystems:Question 8 What are producers? Select one: organisms that make their own food using energy from the sun organisms that get their energy through eating plants organisms that break down dead plants and animals organisms that get their energy through eating other animals レ