Could someone me answer this biology question. asap! ☺

The idea of spontaneous generation was disproved by in a experiment involving jars of meat

Below are the three main organs that make up the plant body. what is the main function of the structure that is identified as b in the picture above? it anchors the plant.it produces food.it absorbs nutrients.it supports the plan

In general, characteristics that an organism survive and reproduce become more common in a population over time. what mechanism of evolution cause this change?