Two spherical objects have masses of 3. 1 x 105 kg and 6. 5 x 103 kg. The gravitational attraction between them is 65 n. How far apart are their centers?.

Which statements are true for invasive species? 1. they always stabilize an ecosystem. 2. they’re always successful in adjusting to a new habitat. 3. they often compete with the native species for resources. 4. they have the ability to displace the native species. 5. they’re always pests.