Answer:
The Urinary bladder, the ureter, and the urethra are all organs that belong in the execratory system.
The heart and spinal chord are not organs in the execratory system. The spinal chord belongs to the nervous system and the heart belongs to the circulatory.
<h3><u>Answer;</u></h3>
B. They protect against oxidative damage from excessive light energy
<h3>Explanation;</h3>
- Some carotenoids seem to be function as photoprotectors.
- These compounds absorb and dissipate excessive light energy that would otherwise damage chlorophyll or interact with oxygen, forming reactive oxidative molecules that are dangerous to the cell.
The fern is a popular seedless vascular plant.
Edward Jenner first "discovered" a vaccine for cowpox, which provided immunity for smallpox.
Answer:
the ratio of the surface area to the volume is 1:2
