A bone cell, formed when an osteoblast becomes embedded in the matrix it has secreted.
Answer: equilibrium phenomenon
Explanation:
Answer:
I think the answer would be lichens, because lichens are formed during primary succession as a pioneer species. During secondary succession, grasses are usually the pioneer species.
The time taken by light to reach pluto will be 5.6 hours.
<h3><u>Explanation</u>:</h3>
The light is a electromagnetic wave that has the highest velocity and same velocity as all other electromagnetic radiations existing in this universe. The light takes about 8.2 seconds to reach from sun to earth. So lets check howmuch time does light take to reach pluto from sun.
The speed of light was calculated to be m/s. This is the speed of each and every electromagnetic waves.
The distance of pluto from sun is huge. On an average it's km or m.
So time taken by light to reach from sun to pluto will be seconds. Or actually 5.6 hours.
The first known single-celled organisms appeared on Earth about 3.5 billion years ago, roughly a billion years after Earth formed. More complex forms of life took longer to evolve, with the first multicellular animals not appearing until about 600 million years ago.