Normal development in tests requires a temperature. cremaster muscle contract or relax to move testes toward or away from the body or to maintain the acceptable temperature for testicular.
The body temperature regulation is controlled by the autonomic nervous system under the guidance of medulla oblongata which is in the brain system.
prophase is the first stage and it looks like all the chromatin condenses into chromosomes and the nucleus dissolves (there is no nucleus when you look at it)
DNA replication is multiple DNA, while DNA just is one alone.
Answer:
Examples of astronomical objects include planetary systems, star clusters, nebulae, and galaxies, while asteroids, moons, planets, and stars are astronomical bodies. The birth of the sun is what created the universe. When the sun was first born it had huge amounts of gravity. This gravity was strong enough to make rocks and other celestial bodies come together to form our planets.
Explanation:
