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:
A mortgage
Explanation: a mortgage is what you pay to the bank for a home loan
Answer:
The climate change may turn diseases spread in different areas of the Globe.
Explanation:
Climate change is producing the environment to evolve constantly. We may see rising temperatures across the Globe and with it some changes on rainfall as well. Those features will dramatically change the whole environment and could possibly turn habitats, that were in the past not associated with disease vector insects, into places like the northeastern from United States and thus, mosquistoes like the the vector of malaria can be a possible disease to hit developed countries.
