Which choice is an example of an effect of agricultural techniques on the environment? o increased oxygen levels in a pond due to fertilizer runoff O sediment accumulation in a lake near a farm O soil compaction caused by tillage o increased plant growth caused by application of herbicides

Me 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?

Which of the following graphs have the same wavelengths

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?