A roller coaster car is at the top of a 72 m hill and weighs 966 N. What is the coasters potential energy?

Solutions to environmental problems in europe must

Where can a dna be found in a prokaryotic cell

Parthenogenesis is a type of reproduction that does not require a mate. it’s rarely seen in birds and higher vertebrates. parthenogenesis involves the formation of a zygote. but this zygote is formed without fertilization. in parthenogenesis, in the absence of a male gamete, the ovum develops directly in the zygote.