The second one due to the fact that pioneer plants come in much later
Answer:
In an open system matter and energy can be transferred ·
In a closed system only energy can be exchanged ·
In an isolated system neither matter nor energy can be exchanged · The cell has to be an open system because it needs to exchange matter and energy and the only way to do so is through an open system ·
As an open system the cell allows nutrients to enter the cell and waste products to exit the cell ·
The cell does this through the use of a semi-permeable membrane
Explanation:
Synthesis and transport of polypeptides.
The formal region is superior (proximal) to the crural region.
Our body is divided into different regions. The term Proximal refers to the closer point of attachment to body's main part. Thigh is the femoral region of the body. An example is that, knee is proximal to feet. The femoral region is also proximal to plantar region.
When the lighting direction is at 180 degree to the flower petal, then the flower petals almost seem to glow. It can also happen if the petals are backlit. The edges of the flower petals tend to glow due to the light coming from the back. I hope the answer helps you.
