ANSWER IS : A troposphere
<span>Science has the following objectives and goals:
- To investigate and understand the natural world
- To explain events in the natural world
- To use derived explanations to make useful predictions
</span><span>Understanding how science works will help you make better decisions and will make you a better member of the society.</span>
Answer:
External factors include physical and chemical signals. Growth factors are proteins that stimulate cell division. – Most mammal cells form a single layer in a culture dish and stop dividing once they touch other cells. Two of the most important internal factors are kinases and cyclins.
A chromatid is each of the two threadlike strands that make up DNA, a chromatin is the materials that make up chromosomes, and a chromosome is the threadlike structure made of nucleus acids found in the nucleus of a cell and contains genetic information in the form of genes
