When compared to earth’s atmosphere 4.5 bya, earth’s atmosphere today
a. more carbon dioxide
b. more methane
c. more oxygen
d. more copper

a more carbon dioxide

explanation:

answer: a

all pollution being admions

science-ocean floors and habitats study guide by volleyballqueen3817 a major advance in ocean-floor mapping. list four sections of the ocean floor. algae that use sunlight to produce their own food through photosynthesis. all of the feeding relationships that exist in a habitat. drying out, predators, find food.