What two processes contributed oxygen to Earths
second atmosphere?
Group of answer choi...
Biology, 04.04.2021 06:50, summeredki
What two processes contributed oxygen to Earths
second atmosphere?
Group of answer choices
photosynthesis and volcanism
volcanism and weathering
photosynthesis and photolysis
weathering and rainfall
Answers: 2
Biology, 22.06.2019 00:40, dylancasebere
Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism
Answers: 2
Biology, 22.06.2019 16:00, russelllang606
Explain why it’s important for scientists to study the sun. list at least two challenges researchers face when examining earth’s nearest star.
Answers: 1
Biology, 22.06.2019 16:30, DnakMeme6e7272727272
Abiology teacher asks students to give examples of genetic variations that support the idea that changes in a population’s environment affect genetic variation. which is the least supportive example? a. changes in genetics in human populationsb. antibiotic resistance in bacteria populationsc. pesticide resistance in garden insectsd. changes in the color of the peppered moth population in england
Answers: 1
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