Biology

Biology, 29.07.2019 01:00, warnene17

Which was least likely to have been a component of earths atmosphere before life began? oxygen water vapor carbon dioxide sulfur

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Physics, 27.07.2019 01:30, davelopez979

Which was least likely to have been a component of earth’s atmosphere before life began? a-sulfur b-carbon dioxide c-oxygen d-water vapor

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Biology, 30.07.2019 21:00, Anabel818

Erupting volcanoes emit gases such as sulfur dioxide into the atmosphere. sulfur dioxide can react with water and oxygen in the atmosphere to this the ph of water systems and damage aquatic life. first blank a. acid rain b.carbon dioxide c.eutrophication second blank a. increase b.decrease c.generate

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Geography, 19.10.2019 21:30, Dragonskeld

1which of earths spheres contains most of its mass? a atmosphere b hydrosphere c geosphere* d biosphere 2 erosion and weathering are examples of which types of forces? a constructive forces b destructive forces* c gravitational forces d inertia-related forces 3 which of the following statements about earths atmosphere is true? a earths atmosphere contains 78% water vapor which is essentail to life b earths atmosphere contains 21% oxygen c earths atmosphere contains carbon dioxide which all life forms require d earths atmosphere allows radiation from the sun to pass through it and warm earths surface* 4 the strenght of the force of gravity between two objects is determined by which of the following factors? select all that apply a the messes of the objects* b the distance between the objects* c the volumes of the objects d the surface area of the objects 5 earth and moon are kept in there respective orbits due to the influence of a inertia b gravity c gravity and inertia* d neither gravity or inertia *= my answer

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