Answer:
The number of chromosomes
is specific for each type of organism
Explanation:
Chromosomes number among organisms varies e.g human chromosome number is 46 while that of cat is 38 which shows the variance in chromosome number among organisms
Answer:
The correct answer is internal and external signals regulate the progression of the cell cycle at various critical check points.
Explanation:
The cyclic event that helps to prepare the cell for division is termed as cell cycle.Cell cycle are regulated by various internal and external factors which regulates the passage of cell through various critical check point.
For example Maturation promoting factor helps in the progression of frog egg oocytes cells from G2 to M phase.
G1 cyclin CDK helps in the passage of cell from G1 to S phase.
Biogeography.
I just typed it into google.
Answer:coal causes air pollution
Explanation:
There will be no food for carnivores if herbivores were removed in the food web.