let us suppose a person who has a 45 kg mass is riding along a frictionless roller coaster track. The cart at a particular instant, is 15 m above the ground and traveling at 30 m per seconds. Do you think the kinetic and potential energy of the car that the person riding is the same? why?

The body is protected against harmful flu viruses by

Hydrilla (hydrilla verticillata) is an invasive aquatic plant and one of the most serious aquatic pests in florida. hydrilla has already been introduced to hundreds of bodies of water throughout florida, hydrilla is difficult to control because it grows rapidly and survives in many different water depths and conditions. hydrilla • describe how hydrilla affects native plant and animal species. include both a biotic and an abiotic limiting factor. • suggest one biotic and one abiotic recommendation that could slow the spread of hydrilla

Which animal is a producer in this ecosystem