it was not uncommon in the middle east and asia to find ___ of merchants traveling together across the desert to trade their goods in far-away markets.

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.

Give 2 examples of the sedimentation in the deep ocean?

Balanced rock sits on a thin spike of rock in a canyon what forces keep the rock balanced on its tiny pedestal