Every person has their own part to play or if you want to get scientific then a niche. And if somebody doesn't do their job then it could slow everyone else down. Maybe I don't fully understand the question, But I hope its right.
Newton's First law of motion: An object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force.
This is also known as the law of inertia
Anyways, you feel tossed around because unbalanced forces are acting upon you while riding on a roller coaster. Hope this helps!
PHYSICAL DEVELOPMENT involve growth and changes in ......... Physical development in humans starts from infancy up to late adolescent. Features of physical development include: development of motor skills, puberty, development of muscle and physical coordination, etc.
D-walls and doors would represent the cell membrane
Easy!!
the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment.
