This is because human have a much larger surface area.
Small organisms have a small surface area and thus simple diffusion meets their transport requirements.
As the size of the organisms increases, its surface area to volume ratio decreases. This means it would take days for molecules to diffuse through a large animal, so humans have a circulatory system with a pump to transport materials quickly around their bodies.
Therefore due to their large size, humans require a specialized transport system.
Answer:
1044.3 days
Explanation:
Given,
Radius of sphere shaped cells of tumor 
micrometer
centimeter 
micrometers
Thus, radius of sphere in centimeters
Volume of a sphere
Volume of one cell of tumor
centimeter cube
As we know ,
Substituting all the given values in above equation, we get -
days
Answer:
Explanation: Abiotic is nonliving and biotic is living so I would say the boat the house anabiotic would be the fish the man the tree the grass the bird and yea.
