An organism's reproductive cells, such as sperm or egg cells, are called

Which of the following is one of the four conditions necessary for natural selection to occur in a population? fewer organisms are born than the habitat can support mutation does not occur organisms have identical characteristics variation is inherited

Dermal tissue in plants stores 1.extra food 2.transports water and nutrients 3.transports waste materials 4.is similar to epithelial cells in animals

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?