According to the passage, the author implies that foreign ecosystems have which potential effect on shorebirds? a. they can make a bird more vulnerable to predators. b. they can expose shorebirds to foreign toxins. c. they can diminish a bird’s ability to navigate. d. they can lead to a reduction in the bird’s weight. e. they can cause a bird to become separated from its flock.

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?