Think about the possible effects of exotic species. The Norway rat and the black rat were both introduced to this country from Europe. The Norway rat is found only in cities and inhabits most cities in the U. S. The black rat can live in cities and rural areas but in New Jersey is only found in rural areas. Some cities in New Jersey which previously had only black rats, now have only Norway rats. This is an example of: Group of answer choices competitive exclusion evolution by natural selection genetic swamping density-dependent population regulation commensalism

Which of the following was a characteristic of a dromaeosaur? modified front claw grasping with their forelimbs both a and b none of the above

What is the cause hearing loss in human being

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?