Explanation: Fertilization in flowering plants happens through a process called pollination. ... Fertilization occurs when one of the sperm cells fuses with the egg inside of an ovule. After fertilization occurs, each ovule develops into a seed. • Each seed contains a tiny, undeveloped plant called an embryo.
When we need more oksigen our body reacts and make heart to beat more faster so there will be more blood circulating and will compensate the dyoksid carbon that is produce with oksigen
