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Which human activity depletes the ozone layer?
A. planting genetically-...
Biology, 04.11.2020 07:20, krystinayagel013
Please Help :)
Which human activity depletes the ozone layer?
A. planting genetically-modified crops
B. using solar power to generate electricity
C. fighting fires with halon-containing fire extinguishers
D . purifying crude metals by heating them to their liquid state
Answers: 3
Biology, 21.06.2019 13:00, keigleyhannah30
Which of the following are energy solutions that release pollution into the air>
Answers: 1
Biology, 22.06.2019 10:10, NewKidnewlessons
20 point pls brianliest 1. what does a red shift mean? blue shift? 2. describe the big bang theory. according to this theory, how old is the universe? 3. scientists believe the universe is expanding. what is the evidence that supports this? 4. describe a nebula. 5. describe the 3 types of galaxies. what is a barred spiral galaxy? 6. what is a light year? how far is alpha centauri from earth? 7. describe the universal law of gravitation. be sure to include gravitational force between two objects. 8. describe the planets’ orbits around the sun. 9. what is the asteroid belt? where is it located? 10. describe rotation and revolution of earth. what determines an earth day and year? 11. how do galaxies exist? 12. compare and contrast the inner and outer planets. 13. what causes the seasons?
Answers: 1
Biology, 22.06.2019 11:50, afropenguin2853
Which of the following describes how binary fission and mitosis are similar? a)they are both used for growth or repair b)they both break down membrane-bound nuclei c)both invoke the replication of a single stand of dna d)both replicate genetic material
Answers: 1
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