Well there really isn't an age limit, sometimes the parents don't want you to date but you can date at any age really, Most people I know started dating when they were 9 to 10 years old. I hope this helps and if you have any more questions, Feel free to ask.
Answer:
you could calculate the speed of a snail or a cheetah by measuring a distance and measuring the time it takes them to get there. direction would be considered if you were finding velocity.
Explanation:
The geologist time scale was formed when scientists studied rock layers and index fossils worldwide. With this information, they placed Earth's rocks in order by relative age. Later, radioactive dating helped determine the exact age of the divisons in the geologic time scale.
This scale is organized by the 4.6 billion years of earth's history into sections based on important changes seen in the geologic record. The largest intervals are called eons, with each eon containing many millions of years.
In precambarian time the processes that affect Earth's surface have lessened the erosion on the surface. Earth was being hit by meteorites every second. Now there is water erosion and there wasn't back then. The surface changes have lessened over time.
Gonadotropin releasing hormones causes the ovaries and testes to greatly increase their production of estradiol and testosterone.
Gonadotropin releasing hormone is a hormone is released from nerve cells in the brain or produced in hypothalamus and transported to the pituitary gland through the blood stream. These hormones are very important in fertility.
