Sexual production requires the sperm and egg cell
Subsoil: layer of soil under topsoil on the surface of the ground
Topsoil: fertile, upper part of soil
Regolith: unconsolidated residual or transported material that overlies the solid rock on the earth
Bedrock: lies under regolith, can be 100 meters undersurface.
Order of surface: Topsoil --> Subsoil --> Regolith --> Bedrock
Your answer is bedrock
Models are simplified representations of of different complex systems. They also help to study very small or large objects.
Option B, D and E.
Explanation:
Models are very simplified representations of complex systems and organs or structures which are prepared to study those systems by scientists and normal people easily. Many structures of human body like cells or some tissues are very small in structure or microscopic in nature. So studying them are very hard without specific instruments which are not always available. Thus models are made to easily study those structures by scientists and even normal people and students.
A is false bout neutrophils
