While swimming, Frogs propell themselves, and their small legs act like a turbine, it sends water backward, so they get forward speed in reaction.
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Fossils have animals, plants and living organisms imprinted into them, it helps us understand what lived and thrived in certain environments. The age of the rock can also help you understand when that thing lives.I hope this helps!
So, as you know, when a sperm cells (Male sex cell) meets the Egg cell (Female Sex Cell) it forms something called a zygote. And from that point on, the egg cell reproduces more and more (making more cells) in a type of cell called a stem cell, which can be used for anything the body needs. The newborn babies keep these cells up until birth or the incubation (growth of the baby in the mother's uterus), and then they are ready to be born.
