Por qué nuestro sistema solar no peligra por un agujero negro?

How can you tell the difference between rough er from smooth er?

Math focus 4. calculate a map has index contours at 250 m, 500 m, and 750 m. what is the contour interval?

The serengeti plains are part of the african savanna ecosystem and are home to a variety of different species of plants and animals. the serengeti plains experience a seven-month period of seasonal drought each year, during which the ecosystem receives only four inches of rain and the availability of some resources becomes very scarce. which type of limiting factors does the seasonal drought in the serengeti plains affect?