Organisms that get nutrients by eating other organisms

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.

When energy is used, atp molecules convert to adp molecules. this process is called

All phases of matter may have a fixed mass