We need nutrients and oxygen to be supplied to our cells at a very fast rate as our cells need a lot of energy to keep us alive. Therefore we must have an efficient transport system to transport nutrients and oxygen to the billions of cells in our body. The transport system in man is known as the circulatory system.
because they migrate so they depend
Circulatory & respiratory system
pulmonary - lungs -- circulatory helps transport as well.
pulmonary - lungs -- circulatory helps transport as well.
by the cardiovascular system (in blood)
then you can not transport blood threw out the body.
because they just cant
An extensive transport system that runs through the body would be the circulatory system. It travels blood throughout the body and passes the oxygen that muscles need.
As for seeds, we humans eat fruit and sometimes drop them. so when a squirrel comes and sees the seed, it will dig a hole onto the dirt and in a couple of days the plant will grow and give food to other plants which are in need of it.
mammals have closed circulatory system and further double circulatory system.
why is circulatory system known as transport system
When someone builds a drainage system it effects the water cycle is a couple different ways. It can make water transport to new places and humans could pollute the water system even more.
They don't have any transport system