Answer:
They are 3 in numbers
Explanation:
which are the airway, the lungs, and the muscles of respiration
Answer:
D the others are highly pollutant expesially nuclear and natural gas
Explanation:
Two key characteristics of a good scientific investigation are hypothesis and observation of whatever organism your studying.
Answer:cell wall
Explanation:The cell wall in plant cell is made of cellulose and functions to provide rigidity to the cell. Cell wall has no living function
Answer:Changes that affect the structure of chromosomes can cause problems with growth, development, and function of the body's systems. These changes can affect many genes along the chromosome and disrupt the proteins made from those genes.
Structural changes can occur during the formation of egg or sperm cells, in early fetal development, or in any cell after birth. Pieces of DNA can be rearranged within one chromosome or transferred between two or more chromosomes. The effects of structural changes depend on their size and location, whether gene function is interrupted, and whether any genetic material is gained or lost. Some changes cause health problems, while others may have no effect on a person's health.
Explanation: took the test
