Question

Explain transportation in humans. shortly upto 50 - 60 words.

Answer 1

Answer:

In humans, transportation of oxygen nutrients, hormone and other substances to tissue, CO2 to the lungs and waste products to the kidneys is carried out by a well-defined Circulatory System. In lower organisms material is transported by diffusion.

Answer 2

Answer:

Explanation:

As you are reading this, you are simultaneously breathing in oxygen and giving out carbon dioxide. Did you realize this? This is an action that you do continuously. To put it in scientific terms, it is a process called respiration that is happening.