One factor that caused the Ebola virus to change
was mutation. But once a mutation occurred
w...
Answers: 2
Biology, 21.06.2019 17:40
What links the two strands in a dna helix together in the middle? a. phosphate groups b. sugar rings bonded together c. proteins d. bases with hydrogen bonds
Answers: 1
Biology, 22.06.2019 09:30
Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these
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Biology, 22.06.2019 10:00
Rarefaction is used for which of the following? a. creating a representative sample b. studying how disease impacts populations c. rediscovering species thought to be instinct d. determining which sea creatures live in an area
Answers: 1
Biology, 22.06.2019 10:10
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
Mathematics, 27.03.2020 00:24
Computers and Technology, 27.03.2020 00:24
Mathematics, 27.03.2020 00:24
Mathematics, 27.03.2020 00:24
English, 27.03.2020 00:24