Answer:
the umbilical cord is considered both the physical and emotional attachment between mother and fetus.
Explanation:
this structure allows for the transfer of oxygen and nutrients from the maternal circulation into fetal circulation while simultaneously removing waste products from fetal circulation to be eliminated maternally.
no because Separation of oxygenated and deoxygenated blood in the heart of three types of animals. The three-chambered frog heart mixes oxygenated and deoxygenated blood in the ventricle. Therefore, the body never receives fully oxygen-rich blood.
The part of human body that do the same job as wires and circuits is our brain . With enormous amount of nerves and computing cells , our brain has the capacity to do work like circuits . ,Not equal to them , but to some extent its quite complex
Answer:
<em>Nonetheless, some human activities have clear direct impacts. These include land use change, land management, land degradation, soil sealing, and mining. ... This in turn leads to loss of soil carbon and other nutrients and to changes in soil properties and in soil biodiversity.</em>
Answer:
B I think
Explanation:
there are 2 directions and in each direction there are 2 working in it
