You hang a microscope slide from a submerged, l-shaped pvc pipe in lake water that is 2 feet deep. the slide hangs 6 inches below the surface of the water and remains there for eight weeks. when you remove it and bring it to your lab for observation, you see that algae, bacteria, and even some fungi have colonized the slide. you determine that you are looking at a(n)

According to the loco mass the mass of reactants and products

Match the types of competition to their descriptions

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?