Explain how a natural disruption can impact an ecosystem .

The critical period for development, when exposure to disease prenatally can have the most devastating effects of growth, is

Mars has a surface gravity that is only 0.38 (a little over one-third) that of earth's. thus, the weight of an object will also be 0.38 times that of earth. what is the g. p.e. of a climber who weighs 675 newtons on earth at the top of 26,000-meter olympus mons?

Two technicians are discussing oil changes. technician a says that waste oil and old filters need to be disposed of according to the law. technician b says that old filters can be returned to the parts department for a core value. which technician is correct?           a. technician a only   b. both technicians a and b   c. technician b only   d. neither technician a nor b