Biology, 11.12.2020 07:40 1969976289
One specific substance necessary for muscle activity that is delivered to muscles more effectively as a result of increased heart rate?
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Biology, 21.06.2019 13:30
Ocean waves move up and down in circles, but transmit horizontally toward the shore.
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Biology, 22.06.2019 02:30
Contrast how pollination is different among gymnosperms and angiosperms.
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Biology, 22.06.2019 05:50
Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?
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Biology, 22.06.2019 09:40
80 points pls brainliest 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
One specific substance necessary for muscle activity that is delivered to muscles more effectively a...
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