1) a five carbon ribose sugar
2) a phosphate molecule
3) one of four nitrogenous bases: adenine, guanine, cytosine or uracil
Answer:
A. A resource that is so scarce (in restricted quantity) that it limits the size of a population is called a limiting factor. Any single resource can be a limiting factor to a population size. For example, the amount of water available can affect the number of plants that can grow in an area.
The bronchi are where air passes from the trachea.
Answer:
Excretion is a process by which metabolic waste is eliminated from an organism.
